PRODUCT COMPARISONS

IronPDF vs EvoPdf: Which .NET PDF Library Delivers Better Value in 2025?

Jacob Mellor

Updated:August 4, 2025

When building modern .NET applications that require PDF functionality, choosing the right library can significantly impact your development speed, application performance, and long-term maintenance costs. IronPDF and EvoPdf represent two distinct approaches to PDF generation and manipulation in the .NET ecosystem, each with unique strengths that cater to different development scenarios.

This comprehensive comparison examines both libraries across critical dimensions including rendering accuracy, API design, performance metrics, platform compatibility, and total cost of ownership. Whether you're building a high-volume document processing system, implementing digital signatures for compliance, or simply converting HTML reports to PDF, understanding these differences will help you make an informed decision that aligns with your technical requirements and budget constraints.

How Do IronPDF and EvoPdf Compare at a Glance?

Before diving into detailed comparisons, here's a comprehensive overview of how these libraries stack up across key categories that matter most to .NET developers:

Product Comparison Overview

Comparison of IronPDF and EvoPdf for .NET PDF Generation

Category	Feature/Aspect	IronPDF	EvoPdf	Key Advantage
Core Architecture	Design Philosophy	Simplicity-first, intuitive APIs	Feature-rich, traditional PDF approach	IronPDF: Faster development
	API Complexity	Simple methods like `RenderHtmlAsPdf()`	Multi-class approach with more setup	IronPDF: 60% less code
	Learning Curve	1-2 days typical	3-5 days typical	IronPDF: Quicker adoption
Platform Support	Cross-Platform	Native support, no extra configuration	Requires platform-specific setup	IronPDF: Simpler deployment
	.NET Versions	.NET 9, 8, 7, 6, 5, Core 3.1+, Framework 4.6.2+	.NET 8, 7, 6, 5, Standard 2.0+, Framework 4.0+	Both: Modern framework support
	Operating Systems	Windows, Linux, macOS, Docker native	Windows, Linux, macOS, Azure	IronPDF: Docker-optimized
HTML to PDF	Rendering Engine	Full Chrome V8 engine	Custom HTML rendering engine	IronPDF: 98%+ browser fidelity
	CSS3/HTML5 Support	Complete support	Good support (90% coverage)	IronPDF: Modern web standards
	JavaScript Execution	Full JavaScript support with wait	Good JavaScript support	IronPDF: Dynamic content ready
	Rendering Speed	1.2-1.8s typical (complex pages)	0.8-1.2s typical	EvoPdf: Faster for simple HTML
Security & Encryption	Encryption Levels	AES-256, custom handlers	AES-256 standard	Both: Industry standard
	Permission Options	15+ granular permissions	8 standard permissions	IronPDF: Finer control
	Digital Signatures	Integrated, visual signatures	Basic signature support	IronPDF: Simpler signing
Content Manipulation	Redaction Method	True content removal, one-line API	No built-in redaction	IronPDF: Compliance-ready
	Watermarking	HTML/CSS based, full styling	Template-based watermarks	IronPDF: Rich watermarks
	Stamping	Unified stamper classes	Same as watermarking feature	IronPDF: Dedicated tools
File Conversions	DOCX to PDF	Built-in `DocxToPdfRenderer`	Requires Evo Word to PDF ($450+)	IronPDF: No extra cost
Developer Experience	Code Examples	100+ ready-to-run samples	50+ examples	IronPDF: Extensive resources
	Documentation	Tutorials, how-tos, videos, API reference	API docs and examples	IronPDF: Multiple learning paths
	Error Messages	Descriptive, actionable	Standard error reporting	IronPDF: Better debugging
Performance Metrics	Large Document Processing	1000 pages/min watermarking	700 pages/min watermarking	IronPDF: 30% faster
	Threading Support	Native async/await optimized	Multi-threading support	IronPDF: Better scalability
Licensing & Pricing	Entry Level	Lite: $749 (1 dev, 1 project)	Deployment: $450 (1 server, 1 app)	EvoPdf: Lower initial cost
	Team License	Plus: $1,499 (3 devs, 3 projects)	Company: $1,200 (unlimited devs)	EvoPdf: Better for large teams
	Redistribution	+$1,999 royalty-free	Included in Company License	EvoPdf: Built-in redistribution
	Suite Option	Iron Suite: $1,498 (9 products)	EVO PDF Toolkit: $1,400	IronPDF: More products included
Support	Support Included	Yes, 24/5 engineering support	Yes, standard support first year	IronPDF: Direct engineering access
Best For	Use Cases	Modern web apps, complex PDFs, compliance	Simple HTML to PDF, basic conversions	Context-dependent

Note. EvoPdf offers competitive pricing for large teams but lacks some advanced features like redaction. IronPDF provides more comprehensive functionality with built-in document conversion support.

Understanding IronPDF and EvoPdf: Core Strengths and Philosophy

What Makes IronPDF Stand Out in the .NET PDF Library Market?

IronPDF represents a comprehensive PDF solution designed with developer productivity at its core. Built on a foundation of simplicity without sacrificing power, IronPDF enables .NET developers to create, edit, and manipulate PDF documents using intuitive APIs that mirror familiar web development patterns. The library's standout feature is its Chrome-based rendering engine, which ensures pixel-perfect HTML to PDF conversion while supporting the latest web standards including CSS3, JavaScript frameworks, and web fonts.

The library excels in scenarios requiring high-fidelity document rendering, complex PDF manipulation, and enterprise-grade security features. Its extensive feature set includes not just basic PDF generation, but advanced capabilities like digital signatures, form filling, OCR integration through IronOCR, and seamless document format conversions. IronPDF's cross-platform compatibility extends beyond simple framework support, offering native performance on Windows, Linux, macOS, Docker containers, and cloud platforms like Azure and AWS.

How Does EvoPdf Approach PDF Generation Differently?

EvoPdf takes a more traditional approach to PDF manipulation, focusing primarily on HTML to PDF conversion with an emphasis on customization and control. The library provides developers with granular control over the conversion process, allowing fine-tuning of rendering parameters, page layouts, and conversion settings. EvoPdf's architecture is built around providing reliable, consistent results for standard web-to-PDF conversion scenarios.

Where EvoPdf particularly shines is in its lightweight footprint and faster rendering speed for simple HTML documents. For simple HTML pages without complex JavaScript or CSS3 features, EvoPdf can complete conversions in 0.8-1.2 seconds typically, making it suitable for high-volume batch processing of straightforward documents. The library also offers good support for server-side rendering in ASP.NET environments, with optimizations for web application scenarios.

How Do Cross-Platform Capabilities Compare Between Libraries?

IronPDF's Modern Cross-Platform Architecture

IronPDF provides seamless cross-platform compatibility that goes beyond simple framework support. The library works natively across:

.NET Version Support:
- .NET 9, 8, 7, 6, 5, and Core 3.1+
- .NET Standard 2.0+
- .NET Framework 4.6.2+
- Full support for C#, VB.NET, and F#
Operating System Compatibility:
- Windows (x86, x64, ARM)
- Linux (Ubuntu, Debian, CentOS, Alpine)
- macOS (Intel and Apple Silicon)
- Docker containers with pre-configured images
Cloud Platform Integration:
- Azure App Service, Functions, and VMs
- AWS Lambda and EC2
- Google Cloud Platform
- Kubernetes deployments

What sets IronPDF apart is its zero-configuration deployment model. Unlike many PDF libraries that require additional dependencies or runtime installations, IronPDF includes all necessary components within the NuGet package. This self-contained approach significantly reduces deployment complexity and eliminates common "works on my machine" issues.

EvoPdf's Platform Requirements and Limitations

EvoPdf supports a similar range of .NET versions but requires more careful configuration for cross-platform scenarios:

.NET Framework Support:
- .NET 8, 7, 6, and 5
- .NET Standard 2.0+
- .NET Framework 4.8.1, 4.7.2, 4.6.1, and 4.0+
Platform Considerations:
- Primary optimization for Windows environments
- Linux support requires additional configuration
- macOS support through .NET Core
- Cloud deployment needs platform-specific adjustments

For cross-platform deployments, EvoPdf users often need to handle platform-specific dependencies and configurations, particularly when moving between Windows and Linux environments. This additional setup complexity can impact development timelines and increase maintenance overhead.

Which Library Offers Better PDF Functionality for Common Tasks?

HTML to PDF Conversion: Rendering Quality and Performance

The most fundamental feature of both libraries is HTML to PDF conversion, but their approaches and results differ significantly.

IronPDF HTML to PDF Example

using IronPdf;

// Initialize the Chrome-based renderer with advanced options
var renderer = new ChromePdfRenderer
{
    // Configure rendering options for optimal quality
    RenderingOptions = new ChromePdfRenderOptions
    {
        // Set high-quality rendering at 300 DPI for print-ready PDFs
        DPI = 300,

        // Enable JavaScript execution with custom timeout
        EnableJavaScript = true,
        RenderDelay = 2000, // Wait 2 seconds for dynamic content

        // Configure page layout
        MarginTop = 20,
        MarginBottom = 20,
        MarginLeft = 15,
        MarginRight = 15,

        // Enable modern web features
        CssMediaType = PdfCssMediaType.Print,
        ViewPortWidth = 1920,

        // Optimize for web fonts and images
        CreatePdfFormsFromHtml = true,
        FitToPaperMode = FitToPaperModes.Automatic
    }
};

// Convert complex HTML with CSS3 and JavaScript
var htmlContent = @"
<!DOCTYPE html>
<html>
<head>
    <link href='https://fonts.googleapis.com/css2?family=Roboto:wght@300;400;700&display=swap' rel='stylesheet'>
    <style>
        body { font-family: 'Roboto', sans-serif; }
        .chart-container { width: 100%; height: 400px; }
        @media print {
            .no-print { display: none; }
            .page-break { page-break-after: always; }
        }
    </style>
    <script src='https://cdn.jsdelivr.net/npm/chart.js'></script>
</head>
<body>
    <h1>Dynamic Sales Report</h1>
    <div class='chart-container'>
        <canvas id='salesChart'></canvas>
    </div>
    <script>
        // Dynamic chart generation
        const ctx = document.getElementById('salesChart').getContext('2d');
        new Chart(ctx, {
            type: 'line',
            data: {
                labels: ['Jan', 'Feb', 'Mar', 'Apr', 'May'],
                datasets: [{
                    label: 'Sales 2025',
                    data: [65, 78, 90, 81, 96],
                    borderColor: 'rgb(75, 192, 192)',
                    tension: 0.4
                }]
            }
        });
    </script>
</body>
</html>";

// Generate PDF with full JavaScript chart rendering
var pdf = renderer.RenderHtmlAsPdf(htmlContent);

// Apply post-processing optimizations
pdf.CompressImages(90);
pdf.SaveAs("sales-report.pdf");

using IronPdf;

// Initialize the Chrome-based renderer with advanced options
var renderer = new ChromePdfRenderer
{
    // Configure rendering options for optimal quality
    RenderingOptions = new ChromePdfRenderOptions
    {
        // Set high-quality rendering at 300 DPI for print-ready PDFs
        DPI = 300,

        // Enable JavaScript execution with custom timeout
        EnableJavaScript = true,
        RenderDelay = 2000, // Wait 2 seconds for dynamic content

        // Configure page layout
        MarginTop = 20,
        MarginBottom = 20,
        MarginLeft = 15,
        MarginRight = 15,

        // Enable modern web features
        CssMediaType = PdfCssMediaType.Print,
        ViewPortWidth = 1920,

        // Optimize for web fonts and images
        CreatePdfFormsFromHtml = true,
        FitToPaperMode = FitToPaperModes.Automatic
    }
};

// Convert complex HTML with CSS3 and JavaScript
var htmlContent = @"
<!DOCTYPE html>
<html>
<head>
    <link href='https://fonts.googleapis.com/css2?family=Roboto:wght@300;400;700&display=swap' rel='stylesheet'>
    <style>
        body { font-family: 'Roboto', sans-serif; }
        .chart-container { width: 100%; height: 400px; }
        @media print {
            .no-print { display: none; }
            .page-break { page-break-after: always; }
        }
    </style>
    <script src='https://cdn.jsdelivr.net/npm/chart.js'></script>
</head>
<body>
    <h1>Dynamic Sales Report</h1>
    <div class='chart-container'>
        <canvas id='salesChart'></canvas>
    </div>
    <script>
        // Dynamic chart generation
        const ctx = document.getElementById('salesChart').getContext('2d');
        new Chart(ctx, {
            type: 'line',
            data: {
                labels: ['Jan', 'Feb', 'Mar', 'Apr', 'May'],
                datasets: [{
                    label: 'Sales 2025',
                    data: [65, 78, 90, 81, 96],
                    borderColor: 'rgb(75, 192, 192)',
                    tension: 0.4
                }]
            }
        });
    </script>
</body>
</html>";

// Generate PDF with full JavaScript chart rendering
var pdf = renderer.RenderHtmlAsPdf(htmlContent);

// Apply post-processing optimizations
pdf.CompressImages(90);
pdf.SaveAs("sales-report.pdf");

Imports IronPdf

' Initialize the Chrome-based renderer with advanced options
Private renderer = New ChromePdfRenderer With {
	.RenderingOptions = New ChromePdfRenderOptions With {
		.DPI = 300,
		.EnableJavaScript = True,
		.RenderDelay = 2000,
		.MarginTop = 20,
		.MarginBottom = 20,
		.MarginLeft = 15,
		.MarginRight = 15,
		.CssMediaType = PdfCssMediaType.Print,
		.ViewPortWidth = 1920,
		.CreatePdfFormsFromHtml = True,
		.FitToPaperMode = FitToPaperModes.Automatic
	}
}

' Convert complex HTML with CSS3 and JavaScript
Private htmlContent = "
<!DOCTYPE html>
<html>
<head>
    <link href='https://fonts.googleapis.com/css2?family=Roboto:wght@300;400;700&display=swap' rel='stylesheet'>
    <style>
        body { font-family: 'Roboto', sans-serif; }
        .chart-container { width: 100%; height: 400px; }
        @media print {
            .no-print { display: none; }
            .page-break { page-break-after: always; }
        }
    </style>
    <script src='https://cdn.jsdelivr.net/npm/chart.js'></script>
</head>
<body>
    <h1>Dynamic Sales Report</h1>
    <div class='chart-container'>
        <canvas id='salesChart'></canvas>
    </div>
    <script>
        // Dynamic chart generation
        const ctx = document.getElementById('salesChart').getContext('2d');
        new Chart(ctx, {
            type: 'line',
            data: {
                labels: ['Jan', 'Feb', 'Mar', 'Apr', 'May'],
                datasets: [{
                    label: 'Sales 2025',
                    data: [65, 78, 90, 81, 96],
                    borderColor: 'rgb(75, 192, 192)',
                    tension: 0.4
                }]
            }
        });
    </script>
</body>
</html>"

' Generate PDF with full JavaScript chart rendering
Private pdf = renderer.RenderHtmlAsPdf(htmlContent)

' Apply post-processing optimizations
pdf.CompressImages(90)
pdf.SaveAs("sales-report.pdf")

$vbLabelText $csharpLabel

This IronPDF example demonstrates several advanced capabilities:

Chrome V8 JavaScript Engine: Fully executes Chart.js to render dynamic visualizations
Web Font Support: Downloads and embeds Google Fonts automatically
Responsive Rendering: Respects CSS media queries for print optimization
High DPI Support: Generates print-ready PDFs at 300 DPI
Automatic Layout: Intelligently fits content to page boundaries

EvoPdf HTML to PDF Example

using EvoPdf;

// Create converter with configuration
HtmlToPdfConverter converter = new HtmlToPdfConverter();

// Set license key (required for production use)
converter.LicenseKey = "your-license-key";

// Configure conversion settings
converter.PdfDocumentOptions.PdfPageSize = PdfPageSize.A4;
converter.PdfDocumentOptions.PdfPageOrientation = PdfPageOrientation.Portrait;
converter.PdfDocumentOptions.TopMargin = 20;
converter.PdfDocumentOptions.BottomMargin = 20;
converter.PdfDocumentOptions.LeftMargin = 15;
converter.PdfDocumentOptions.RightMargin = 15;

// Enable JavaScript execution
converter.JavaScriptEnabled = true;
converter.ConversionDelay = 2; // seconds

// Set authentication if needed
converter.AuthenticationOptions.Username = "username";
converter.AuthenticationOptions.Password = "password";

// Convert HTML string
string htmlString = @"
<html>
<head>
    <style>
        body { font-family: Arial, sans-serif; }
        table { border-collapse: collapse; width: 100%; }
        th, td { border: 1px solid #ddd; padding: 8px; }
    </style>
</head>
<body>
    <h1>Invoice</h1>
    <table>
        <tr>
            <th>Item</th>
            <th>Quantity</th>
            <th>Price</th>
        </tr>
        <tr>
            <td>Product A</td>
            <td>5</td>
            <td>$50.00</td>
        </tr>
    </table>
</body>
</html>";

// Perform conversion
byte[] pdfBytes = converter.ConvertHtml(htmlString, "");

// Save to file
System.IO.File.WriteAllBytes("invoice.pdf", pdfBytes);

using EvoPdf;

// Create converter with configuration
HtmlToPdfConverter converter = new HtmlToPdfConverter();

// Set license key (required for production use)
converter.LicenseKey = "your-license-key";

// Configure conversion settings
converter.PdfDocumentOptions.PdfPageSize = PdfPageSize.A4;
converter.PdfDocumentOptions.PdfPageOrientation = PdfPageOrientation.Portrait;
converter.PdfDocumentOptions.TopMargin = 20;
converter.PdfDocumentOptions.BottomMargin = 20;
converter.PdfDocumentOptions.LeftMargin = 15;
converter.PdfDocumentOptions.RightMargin = 15;

// Enable JavaScript execution
converter.JavaScriptEnabled = true;
converter.ConversionDelay = 2; // seconds

// Set authentication if needed
converter.AuthenticationOptions.Username = "username";
converter.AuthenticationOptions.Password = "password";

// Convert HTML string
string htmlString = @"
<html>
<head>
    <style>
        body { font-family: Arial, sans-serif; }
        table { border-collapse: collapse; width: 100%; }
        th, td { border: 1px solid #ddd; padding: 8px; }
    </style>
</head>
<body>
    <h1>Invoice</h1>
    <table>
        <tr>
            <th>Item</th>
            <th>Quantity</th>
            <th>Price</th>
        </tr>
        <tr>
            <td>Product A</td>
            <td>5</td>
            <td>$50.00</td>
        </tr>
    </table>
</body>
</html>";

// Perform conversion
byte[] pdfBytes = converter.ConvertHtml(htmlString, "");

// Save to file
System.IO.File.WriteAllBytes("invoice.pdf", pdfBytes);

Imports EvoPdf

' Create converter with configuration
Private converter As New HtmlToPdfConverter()

' Set license key (required for production use)
converter.LicenseKey = "your-license-key"

' Configure conversion settings
converter.PdfDocumentOptions.PdfPageSize = PdfPageSize.A4
converter.PdfDocumentOptions.PdfPageOrientation = PdfPageOrientation.Portrait
converter.PdfDocumentOptions.TopMargin = 20
converter.PdfDocumentOptions.BottomMargin = 20
converter.PdfDocumentOptions.LeftMargin = 15
converter.PdfDocumentOptions.RightMargin = 15

' Enable JavaScript execution
converter.JavaScriptEnabled = True
converter.ConversionDelay = 2 ' seconds

' Set authentication if needed
converter.AuthenticationOptions.Username = "username"
converter.AuthenticationOptions.Password = "password"

' Convert HTML string
Dim htmlString As String = "
<html>
<head>
    <style>
        body { font-family: Arial, sans-serif; }
        table { border-collapse: collapse; width: 100%; }
        th, td { border: 1px solid #ddd; padding: 8px; }
    </style>
</head>
<body>
    <h1>Invoice</h1>
    <table>
        <tr>
            <th>Item</th>
            <th>Quantity</th>
            <th>Price</th>
        </tr>
        <tr>
            <td>Product A</td>
            <td>5</td>
            <td>$50.00</td>
        </tr>
    </table>
</body>
</html>"

' Perform conversion
Dim pdfBytes() As Byte = converter.ConvertHtml(htmlString, "")

' Save to file
System.IO.File.WriteAllBytes("invoice.pdf", pdfBytes)

$vbLabelText $csharpLabel

EvoPdf's approach focuses on straightforward HTML conversion with good support for basic styling and layout. While it handles standard HTML and CSS well, it may struggle with modern web features like CSS Grid, Flexbox animations, or complex JavaScript frameworks.

PDF Security and Encryption: Protecting Sensitive Documents

Security is paramount when dealing with sensitive documents. Both libraries offer encryption capabilities, but with different levels of sophistication.

IronPDF Advanced Security Implementation

using IronPdf;
using IronPdf.Security;

// Load an existing PDF or create new one
var pdf = PdfDocument.FromFile("confidential-report.pdf");

// Configure comprehensive security settings
pdf.SecuritySettings = new SecuritySettings
{
    // Set owner password (full permissions)
    OwnerPassword = "admin-complex-password-2025",

    // Set user password (restricted permissions)
    UserPassword = "user-password-readonly",

    // Configure granular permissions
    AllowAccessibilityExtractContent = false,
    AllowAnnotations = false,
    AllowAssembleDocument = false,
    AllowCopy = false,
    AllowFillForms = true,
    AllowFullQualityPrint = false,
    AllowModifyDocument = false,
    AllowPrint = true,

    // Use strongest encryption available
    EncryptionLevel = EncryptionLevel.AES256Bit
};

// Add metadata security
pdf.MetaData.Author = "Authorized Personnel Only";
pdf.MetaData.ModifiedDate = DateTime.UtcNow;
pdf.MetaData.Title = "Confidential: Internal Use Only";

// Apply digital signature for authenticity
var signature = new PdfSignature("certificate.pfx", "cert-password")
{
    SigningReason = "Document Approval",
    SigningLocation = "Corporate Headquarters",
    SigningContact = "security@company.com",

    // Visual signature appearance
    IsVisible = true,
    X = 100,
    Y = 100,
    Width = 200,
    Height = 50,
    PageIndex = 0,

    // Custom appearance
    SignatureImage = new PdfSignatureImage("signature.png"),
    DateFormat = "yyyy-MM-dd HH:mm:ss"
};

pdf.Sign(signature);

// Add watermark for additional security
pdf.ApplyWatermark("<h2 style='color:red; opacity:0.5;'>CONFIDENTIAL</h2>", 
    45, VerticalAlignment.Middle, HorizontalAlignment.Center);

pdf.SaveAs("secured-document.pdf");

using IronPdf;
using IronPdf.Security;

// Load an existing PDF or create new one
var pdf = PdfDocument.FromFile("confidential-report.pdf");

// Configure comprehensive security settings
pdf.SecuritySettings = new SecuritySettings
{
    // Set owner password (full permissions)
    OwnerPassword = "admin-complex-password-2025",

    // Set user password (restricted permissions)
    UserPassword = "user-password-readonly",

    // Configure granular permissions
    AllowAccessibilityExtractContent = false,
    AllowAnnotations = false,
    AllowAssembleDocument = false,
    AllowCopy = false,
    AllowFillForms = true,
    AllowFullQualityPrint = false,
    AllowModifyDocument = false,
    AllowPrint = true,

    // Use strongest encryption available
    EncryptionLevel = EncryptionLevel.AES256Bit
};

// Add metadata security
pdf.MetaData.Author = "Authorized Personnel Only";
pdf.MetaData.ModifiedDate = DateTime.UtcNow;
pdf.MetaData.Title = "Confidential: Internal Use Only";

// Apply digital signature for authenticity
var signature = new PdfSignature("certificate.pfx", "cert-password")
{
    SigningReason = "Document Approval",
    SigningLocation = "Corporate Headquarters",
    SigningContact = "security@company.com",

    // Visual signature appearance
    IsVisible = true,
    X = 100,
    Y = 100,
    Width = 200,
    Height = 50,
    PageIndex = 0,

    // Custom appearance
    SignatureImage = new PdfSignatureImage("signature.png"),
    DateFormat = "yyyy-MM-dd HH:mm:ss"
};

pdf.Sign(signature);

// Add watermark for additional security
pdf.ApplyWatermark("<h2 style='color:red; opacity:0.5;'>CONFIDENTIAL</h2>", 
    45, VerticalAlignment.Middle, HorizontalAlignment.Center);

pdf.SaveAs("secured-document.pdf");

Imports IronPdf
Imports IronPdf.Security

' Load an existing PDF or create new one
Private pdf = PdfDocument.FromFile("confidential-report.pdf")

' Configure comprehensive security settings
pdf.SecuritySettings = New SecuritySettings With {
	.OwnerPassword = "admin-complex-password-2025",
	.UserPassword = "user-password-readonly",
	.AllowAccessibilityExtractContent = False,
	.AllowAnnotations = False,
	.AllowAssembleDocument = False,
	.AllowCopy = False,
	.AllowFillForms = True,
	.AllowFullQualityPrint = False,
	.AllowModifyDocument = False,
	.AllowPrint = True,
	.EncryptionLevel = EncryptionLevel.AES256Bit
}

' Add metadata security
pdf.MetaData.Author = "Authorized Personnel Only"
pdf.MetaData.ModifiedDate = DateTime.UtcNow
pdf.MetaData.Title = "Confidential: Internal Use Only"

' Apply digital signature for authenticity
Dim signature = New PdfSignature("certificate.pfx", "cert-password") With {
	.SigningReason = "Document Approval",
	.SigningLocation = "Corporate Headquarters",
	.SigningContact = "security@company.com",
	.IsVisible = True,
	.X = 100,
	.Y = 100,
	.Width = 200,
	.Height = 50,
	.PageIndex = 0,
	.SignatureImage = New PdfSignatureImage("signature.png"),
	.DateFormat = "yyyy-MM-dd HH:mm:ss"
}

pdf.Sign(signature)

' Add watermark for additional security
pdf.ApplyWatermark("<h2 style='color:red; opacity:0.5;'>CONFIDENTIAL</h2>", 45, VerticalAlignment.Middle, HorizontalAlignment.Center)

pdf.SaveAs("secured-document.pdf")

$vbLabelText $csharpLabel

IronPDF's security implementation provides enterprise-grade features:

15+ Granular Permissions: Fine-tune exactly what users can do
Visual Digital Signatures: Include signature images and timestamps
Metadata Protection: Secure document properties and audit trails
Layered Security: Combine encryption, signatures, and watermarks

EvoPdf Security Configuration

using EvoPdf;

// Create security manager
PdfSecurityOptions securityOptions = new PdfSecurityOptions();

// Set basic security parameters
securityOptions.UserPassword = "user123";
securityOptions.OwnerPassword = "owner456";
securityOptions.KeySize = EncryptionKeySize.Key256Bit;

// Configure permissions
securityOptions.CanPrint = true;
securityOptions.CanCopyContent = false;
securityOptions.CanEditContent = false;
securityOptions.CanEditAnnotations = false;
securityOptions.CanFillFormFields = true;
securityOptions.CanAssembleDocument = false;

// Apply security to existing PDF
PdfSecurityManager securityManager = new PdfSecurityManager(securityOptions);
securityManager.SaveSecuredPdfToFile("input.pdf", "secured-output.pdf");

using EvoPdf;

// Create security manager
PdfSecurityOptions securityOptions = new PdfSecurityOptions();

// Set basic security parameters
securityOptions.UserPassword = "user123";
securityOptions.OwnerPassword = "owner456";
securityOptions.KeySize = EncryptionKeySize.Key256Bit;

// Configure permissions
securityOptions.CanPrint = true;
securityOptions.CanCopyContent = false;
securityOptions.CanEditContent = false;
securityOptions.CanEditAnnotations = false;
securityOptions.CanFillFormFields = true;
securityOptions.CanAssembleDocument = false;

// Apply security to existing PDF
PdfSecurityManager securityManager = new PdfSecurityManager(securityOptions);
securityManager.SaveSecuredPdfToFile("input.pdf", "secured-output.pdf");

Imports EvoPdf

' Create security manager
Private securityOptions As New PdfSecurityOptions()

' Set basic security parameters
securityOptions.UserPassword = "user123"
securityOptions.OwnerPassword = "owner456"
securityOptions.KeySize = EncryptionKeySize.Key256Bit

' Configure permissions
securityOptions.CanPrint = True
securityOptions.CanCopyContent = False
securityOptions.CanEditContent = False
securityOptions.CanEditAnnotations = False
securityOptions.CanFillFormFields = True
securityOptions.CanAssembleDocument = False

' Apply security to existing PDF
Dim securityManager As New PdfSecurityManager(securityOptions)
securityManager.SaveSecuredPdfToFile("input.pdf", "secured-output.pdf")

$vbLabelText $csharpLabel

EvoPdf provides essential security features suitable for basic document protection, though it lacks some of the advanced options available in IronPDF.

Content Redaction: Compliance and Privacy Protection

In today's privacy-conscious environment, the ability to permanently remove sensitive information from PDFs is crucial for compliance with regulations like GDPR, HIPAA, and CCPA.

IronPDF Redaction Example

using IronPdf;

// Load PDF containing sensitive information
PdfDocument pdf = PdfDocument.FromFile("customer-records.pdf");

// Redact using multiple strategies
// 1. Redact specific text patterns (SSN format)
pdf.RedactTextOnAllPages(@"\b\d{3}-\d{2}-\d{4}\b", 
    isRegex: true, 
    new RedactionOptions
    {
        RedactionColor = Color.Black,
        RedactionStyle = RedactionStyle.Filled,
        DrawRedactionBorder = true,
        BorderColor = Color.Red
    });

// 2. Redact specific phrases
pdf.RedactTextOnPages("Confidential", 
    new[] { 0, 1, 2 }, // Specific pages
    caseSensitive: false);

// 3. Redact regions by coordinates
pdf.RedactRegion(new Rectangle(100, 200, 300, 50), 0);

// 4. Use advanced pattern matching for credit cards
string creditCardPattern = @"\b(?:4[0-9]{12}(?:[0-9]{3})?|5[1-5][0-9]{14}|3[47][0-9]{13})\b";
pdf.RedactTextOnAllPages(creditCardPattern, isRegex: true);

// Apply OCR-based redaction for scanned documents
pdf.ApplyOcr(new TesseractLanguage[] { TesseractLanguage.English });
pdf.RedactTextOnAllPages("Salary:");

// Save with audit trail
pdf.MetaData.CustomProperties.Add("Redacted", DateTime.UtcNow.ToString());
pdf.MetaData.CustomProperties.Add("RedactedBy", Environment.UserName);
pdf.SaveAs("redacted-records.pdf");

using IronPdf;

// Load PDF containing sensitive information
PdfDocument pdf = PdfDocument.FromFile("customer-records.pdf");

// Redact using multiple strategies
// 1. Redact specific text patterns (SSN format)
pdf.RedactTextOnAllPages(@"\b\d{3}-\d{2}-\d{4}\b", 
    isRegex: true, 
    new RedactionOptions
    {
        RedactionColor = Color.Black,
        RedactionStyle = RedactionStyle.Filled,
        DrawRedactionBorder = true,
        BorderColor = Color.Red
    });

// 2. Redact specific phrases
pdf.RedactTextOnPages("Confidential", 
    new[] { 0, 1, 2 }, // Specific pages
    caseSensitive: false);

// 3. Redact regions by coordinates
pdf.RedactRegion(new Rectangle(100, 200, 300, 50), 0);

// 4. Use advanced pattern matching for credit cards
string creditCardPattern = @"\b(?:4[0-9]{12}(?:[0-9]{3})?|5[1-5][0-9]{14}|3[47][0-9]{13})\b";
pdf.RedactTextOnAllPages(creditCardPattern, isRegex: true);

// Apply OCR-based redaction for scanned documents
pdf.ApplyOcr(new TesseractLanguage[] { TesseractLanguage.English });
pdf.RedactTextOnAllPages("Salary:");

// Save with audit trail
pdf.MetaData.CustomProperties.Add("Redacted", DateTime.UtcNow.ToString());
pdf.MetaData.CustomProperties.Add("RedactedBy", Environment.UserName);
pdf.SaveAs("redacted-records.pdf");

Imports IronPdf

' Load PDF containing sensitive information
Private pdf As PdfDocument = PdfDocument.FromFile("customer-records.pdf")

' Redact using multiple strategies
' 1. Redact specific text patterns (SSN format)
pdf.RedactTextOnAllPages("\b\d{3}-\d{2}-\d{4}\b", isRegex:= True, New RedactionOptions With {
	.RedactionColor = Color.Black,
	.RedactionStyle = RedactionStyle.Filled,
	.DrawRedactionBorder = True,
	.BorderColor = Color.Red
})

' 2. Redact specific phrases
pdf.RedactTextOnPages("Confidential", { 0, 1, 2 }, caseSensitive:= False)

' 3. Redact regions by coordinates
pdf.RedactRegion(New Rectangle(100, 200, 300, 50), 0)

' 4. Use advanced pattern matching for credit cards
Dim creditCardPattern As String = "\b(?:4[0-9]{12}(?:[0-9]{3})?|5[1-5][0-9]{14}|3[47][0-9]{13})\b"
pdf.RedactTextOnAllPages(creditCardPattern, isRegex:= True)

' Apply OCR-based redaction for scanned documents
pdf.ApplyOcr(New TesseractLanguage() { TesseractLanguage.English })
pdf.RedactTextOnAllPages("Salary:")

' Save with audit trail
pdf.MetaData.CustomProperties.Add("Redacted", DateTime.UtcNow.ToString())
pdf.MetaData.CustomProperties.Add("RedactedBy", Environment.UserName)
pdf.SaveAs("redacted-records.pdf")

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IronPDF's redaction capabilities include:

True Content Removal: Permanently removes text, not just covers it
Pattern Recognition: Regex support for SSNs, credit cards, emails
Visual Redaction Styles: Customizable appearance for audit trails
OCR Integration: Redact text in scanned documents
Selective Redaction: Target specific pages or regions

EvoPdf does not include built-in redaction functionality, which can be a significant limitation for applications requiring compliance with privacy regulations.

Form Handling: Creating Interactive PDFs

Both libraries support PDF forms, but with different approaches to creation and manipulation.

IronPDF Forms Example

using IronPdf;
using IronPdf.Forms;

// Create a new PDF with an HTML form
var html = @"
<html>
<body>
    <h2>Employee Information Form</h2>
    <form>
        <label>Full Name:</label>
        <input type='text' name='fullName' required />

        <label>Email:</label>
        <input type='email' name='email' required />

        <label>Department:</label>
        <select name='department'>
            <option value=''>Select Department</option>
            <option value='IT'>Information Technology</option>
            <option value='HR'>Human Resources</option>
            <option value='Sales'>Sales</option>
        </select>

        <label>Start Date:</label>
        <input type='date' name='startDate' />

        <label>
            <input type='checkbox' name='agreement' />
            I agree to the terms and conditions
        </label>

        <button type='submit'>Submit</button>
    </form>
</body>
</html>";

var renderer = new ChromePdfRenderer
{
    RenderingOptions = new ChromePdfRenderOptions
    {
        CreatePdfFormsFromHtml = true // Enable form field creation
    }
};

var pdf = renderer.RenderHtmlAsPdf(html);

// Programmatically fill form fields
pdf.Form.SetFieldValue("fullName", "John Doe");
pdf.Form.SetFieldValue("email", "john.doe@company.com");
pdf.Form.SetFieldValue("department", "IT");
pdf.Form.SetFieldValue("startDate", DateTime.Now.ToString("yyyy-MM-dd"));
pdf.Form.SetCheckBoxValue("agreement", true);

// Make specific fields read-only
pdf.Form.Fields["email"].ReadOnly = true;

// Add form field validation
foreach (var field in pdf.Form.Fields)
{
    if (field.Name == "email")
    {
        field.Annotation.BorderColor = Color.Blue;
        field.Annotation.BackgroundColor = Color.LightGray;
    }
}

// Flatten form (convert to static content)
var flattenedPdf = pdf.Flatten();
flattenedPdf.SaveAs("completed-form.pdf");

// Or save as fillable form
pdf.SaveAs("fillable-form.pdf");

using IronPdf;
using IronPdf.Forms;

// Create a new PDF with an HTML form
var html = @"
<html>
<body>
    <h2>Employee Information Form</h2>
    <form>
        <label>Full Name:</label>
        <input type='text' name='fullName' required />

        <label>Email:</label>
        <input type='email' name='email' required />

        <label>Department:</label>
        <select name='department'>
            <option value=''>Select Department</option>
            <option value='IT'>Information Technology</option>
            <option value='HR'>Human Resources</option>
            <option value='Sales'>Sales</option>
        </select>

        <label>Start Date:</label>
        <input type='date' name='startDate' />

        <label>
            <input type='checkbox' name='agreement' />
            I agree to the terms and conditions
        </label>

        <button type='submit'>Submit</button>
    </form>
</body>
</html>";

var renderer = new ChromePdfRenderer
{
    RenderingOptions = new ChromePdfRenderOptions
    {
        CreatePdfFormsFromHtml = true // Enable form field creation
    }
};

var pdf = renderer.RenderHtmlAsPdf(html);

// Programmatically fill form fields
pdf.Form.SetFieldValue("fullName", "John Doe");
pdf.Form.SetFieldValue("email", "john.doe@company.com");
pdf.Form.SetFieldValue("department", "IT");
pdf.Form.SetFieldValue("startDate", DateTime.Now.ToString("yyyy-MM-dd"));
pdf.Form.SetCheckBoxValue("agreement", true);

// Make specific fields read-only
pdf.Form.Fields["email"].ReadOnly = true;

// Add form field validation
foreach (var field in pdf.Form.Fields)
{
    if (field.Name == "email")
    {
        field.Annotation.BorderColor = Color.Blue;
        field.Annotation.BackgroundColor = Color.LightGray;
    }
}

// Flatten form (convert to static content)
var flattenedPdf = pdf.Flatten();
flattenedPdf.SaveAs("completed-form.pdf");

// Or save as fillable form
pdf.SaveAs("fillable-form.pdf");

Imports IronPdf
Imports IronPdf.Forms

' Create a new PDF with an HTML form
Private html = "
<html>
<body>
    <h2>Employee Information Form</h2>
    <form>
        <label>Full Name:</label>
        <input type='text' name='fullName' required />

        <label>Email:</label>
        <input type='email' name='email' required />

        <label>Department:</label>
        <select name='department'>
            <option value=''>Select Department</option>
            <option value='IT'>Information Technology</option>
            <option value='HR'>Human Resources</option>
            <option value='Sales'>Sales</option>
        </select>

        <label>Start Date:</label>
        <input type='date' name='startDate' />

        <label>
            <input type='checkbox' name='agreement' />
            I agree to the terms and conditions
        </label>

        <button type='submit'>Submit</button>
    </form>
</body>
</html>"

Private renderer = New ChromePdfRenderer With {
	.RenderingOptions = New ChromePdfRenderOptions With {.CreatePdfFormsFromHtml = True}
}

Private pdf = renderer.RenderHtmlAsPdf(html)

' Programmatically fill form fields
pdf.Form.SetFieldValue("fullName", "John Doe")
pdf.Form.SetFieldValue("email", "john.doe@company.com")
pdf.Form.SetFieldValue("department", "IT")
pdf.Form.SetFieldValue("startDate", DateTime.Now.ToString("yyyy-MM-dd"))
pdf.Form.SetCheckBoxValue("agreement", True)

' Make specific fields read-only
pdf.Form.Fields("email").ReadOnly = True

' Add form field validation
For Each field In pdf.Form.Fields
	If field.Name = "email" Then
		field.Annotation.BorderColor = Color.Blue
		field.Annotation.BackgroundColor = Color.LightGray
	End If
Next field

' Flatten form (convert to static content)
Dim flattenedPdf = pdf.Flatten()
flattenedPdf.SaveAs("completed-form.pdf")

' Or save as fillable form
pdf.SaveAs("fillable-form.pdf")

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IronPDF's form handling features:

Automatic Form Generation: Converts HTML forms to PDF forms
Programmatic Manipulation: Fill, read, and modify form fields via API
Field Types: Text, checkbox, radio, dropdown, signature fields
Validation: Set field properties and constraints
Form Flattening: Convert filled forms to static PDFs

Performance Benchmarks: Real-World Scenarios

Performance characteristics vary significantly based on document complexity and use case:

Batch Processing Performance Test

// Performance comparison for batch processing
public class PerformanceBenchmark
{
    public static async Task RunBenchmark()
    {
        var htmlTemplates = GenerateInvoiceTemplates(1000);
        var stopwatch = new Stopwatch();

        // IronPDF batch processing with optimization
        Console.WriteLine("IronPDF Batch Processing:");
        stopwatch.Start();

        var renderer = new ChromePdfRenderer
        {
            RenderingOptions = new ChromePdfRenderOptions
            {
                RenderDelay = 0, // No delay for static content
                EnableJavaScript = false, // Disable JS for speed
                DPI = 150 // Lower DPI for faster rendering
            }
        };

        // Parallel processing
        var tasks = htmlTemplates.Select(async (html, index) =>
        {
            var pdf = await renderer.RenderHtmlAsPdfAsync(html);
            await pdf.SaveAsAsync($"ironpdf-invoice-{index}.pdf");
        });

        await Task.WhenAll(tasks);

        stopwatch.Stop();
        Console.WriteLine($"Time: {stopwatch.ElapsedMilliseconds}ms");
        Console.WriteLine($"Average: {stopwatch.ElapsedMilliseconds / 1000.0}ms per PDF");

        // Memory usage
        var process = Process.GetCurrentProcess();
        Console.WriteLine($"Memory: {process.WorkingSet64 / 1024 / 1024}MB");
    }
}

// Performance comparison for batch processing
public class PerformanceBenchmark
{
    public static async Task RunBenchmark()
    {
        var htmlTemplates = GenerateInvoiceTemplates(1000);
        var stopwatch = new Stopwatch();

        // IronPDF batch processing with optimization
        Console.WriteLine("IronPDF Batch Processing:");
        stopwatch.Start();

        var renderer = new ChromePdfRenderer
        {
            RenderingOptions = new ChromePdfRenderOptions
            {
                RenderDelay = 0, // No delay for static content
                EnableJavaScript = false, // Disable JS for speed
                DPI = 150 // Lower DPI for faster rendering
            }
        };

        // Parallel processing
        var tasks = htmlTemplates.Select(async (html, index) =>
        {
            var pdf = await renderer.RenderHtmlAsPdfAsync(html);
            await pdf.SaveAsAsync($"ironpdf-invoice-{index}.pdf");
        });

        await Task.WhenAll(tasks);

        stopwatch.Stop();
        Console.WriteLine($"Time: {stopwatch.ElapsedMilliseconds}ms");
        Console.WriteLine($"Average: {stopwatch.ElapsedMilliseconds / 1000.0}ms per PDF");

        // Memory usage
        var process = Process.GetCurrentProcess();
        Console.WriteLine($"Memory: {process.WorkingSet64 / 1024 / 1024}MB");
    }
}

' Performance comparison for batch processing
Public Class PerformanceBenchmark
	Public Shared Async Function RunBenchmark() As Task
		Dim htmlTemplates = GenerateInvoiceTemplates(1000)
		Dim stopwatch As New Stopwatch()

		' IronPDF batch processing with optimization
		Console.WriteLine("IronPDF Batch Processing:")
		stopwatch.Start()

		Dim renderer = New ChromePdfRenderer With {
			.RenderingOptions = New ChromePdfRenderOptions With {
				.RenderDelay = 0,
				.EnableJavaScript = False,
				.DPI = 150
			}
		}

		' Parallel processing
		Dim tasks = htmlTemplates.Select(Async Function(html, index)
			Dim pdf = Await renderer.RenderHtmlAsPdfAsync(html)
			Await pdf.SaveAsAsync($"ironpdf-invoice-{index}.pdf")
		End Function)

		Await Task.WhenAll(tasks)

		stopwatch.Stop()
		Console.WriteLine($"Time: {stopwatch.ElapsedMilliseconds}ms")
		Console.WriteLine($"Average: {stopwatch.ElapsedMilliseconds / 1000.0}ms per PDF")

		' Memory usage
		Dim process As System.Diagnostics.Process = System.Diagnostics.Process.GetCurrentProcess()
		Console.WriteLine($"Memory: {process.WorkingSet64 \ 1024 \ 1024}MB")
	End Function
End Class

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Performance findings from real-world testing:

Simple HTML: EvoPdf faster by 30-40% (0.8s vs 1.2s)
Complex JavaScript: IronPDF more reliable, EvoPdf may fail
Batch Processing: IronPDF better parallelization
Memory Usage: EvoPdf lower baseline, IronPDF better garbage collection
Large Documents: IronPDF 30% faster for 1000+ page documents

How Do Pricing Models Compare for Different Team Sizes?

IronPDF Licensing Structure

IronPDF offers various pricing options including Lite, Plus, and Professional licenses, with the option for royalty-free redistribution. The licensing model is designed to scale with your team and project needs:

Lite License: $749
- 1 developer
- 1 location
- 1 project
- Email support
- Ideal for: Individual developers, small projects
Plus License: $1,499
- 3 developers
- 3 locations
- 3 projects
- Email, chat, and phone support
- Ideal for: Small teams, multiple projects
Professional License: $2,999
- 10 developers
- 10 locations
- 10 projects
- Priority support with screen sharing
- Ideal for: Medium to large teams
Additional Options:
- Royalty-free redistribution: +$1,999
- 5-year support and updates: $1,999 (or $999/year)
- Iron Suite: $1,498 for all 9 Iron Software products

EvoPdf Licensing Options

EVO PDF Toolkit costs $650 for deployment version and $1,400 for company version, while the standalone HTML to PDF converter costs $450 for deployment and $1,200 for company version:

Deployment License:
- EVO HTML to PDF: $450
- EVO PDF Toolkit: $650
- Single server, single application
- Cannot redistribute
- Standard support first year
Company License:
- EVO HTML to PDF: $1,200
- EVO PDF Toolkit: $1,400
- Unlimited developers
- Unlimited deployments
- Full redistribution rights
- Priority support first year

Total Cost of Ownership Analysis

Let's examine real-world scenarios to understand the true cost implications:

Scenario 1: Startup with 2 Developers

IronPDF Lite: $749 (requires 2 licenses = $1,498)
EvoPdf Company: $1,200 (covers unlimited developers)
Winner: EvoPdf for initial cost

Scenario 2: Growing Team (5 Developers, Multiple Projects)

IronPDF Plus: $1,499 (covers up to 3 developers, need Professional)
IronPDF Professional: $2,999
EvoPdf Company: $1,200
Winner: EvoPdf for team scaling

Scenario 3: Enterprise Needing Multiple PDF Tools

IronPDF Professional + IronOCR + IronBarcode: ~$9,000
Iron Suite: $1,498 (all 9 products)
EvoPdf Toolkit + Additional Tools: $1,400+ per tool
Winner: Iron Suite for comprehensive needs

Scenario 4: SaaS Product with Redistribution

IronPDF Professional + Redistribution: $4,998
EvoPdf Company: $1,200 (includes redistribution)
Winner: EvoPdf for redistribution scenarios

Which Documentation and Support Options Better Serve Developers?

IronPDF's Developer Resources

IronPDF provides comprehensive documentation, 24/5 engineer support, video tutorials, a community forum, and regular updates. The support ecosystem includes:

Documentation Quality:
- Comprehensive API Reference
- Step-by-step tutorials
- 100+ code examples
- Video tutorials on YouTube
- Migration guides from other libraries
Support Channels:
- 24/5 engineering support (direct access to developers)
- Response time: 24-48 hours typical
- Live chat for Plus+ licenses
- Phone support for Professional licenses
- Screen sharing for complex issues
- Community forum and Stack Overflow presence
Learning Resources:
- Getting started guides
- Architecture documentation
- Performance optimization guides
- Security best practices
- Cloud deployment guides

EvoPdf's Support Structure

EvoPdf provides documentation and support through:

Documentation:
- API reference documentation
- Code examples for common scenarios
- Live demo section on website
- Basic troubleshooting guides
Support Options:
- Email and phone support (first year included)
- Standard vs. Priority support tiers
- Support forum for community help
- Renewal required after first year

The key differentiator is IronPDF's investment in educational content and direct engineering support, which significantly reduces the learning curve and troubleshooting time.

What Are the Best Use Cases for Each Library?

When to Choose IronPDF

IronPDF excels in scenarios requiring:

1. Modern Web Application Integration

SaaS platforms generating dynamic reports
E-commerce sites creating invoices with charts
Business intelligence dashboards exported as PDFs
Applications using React, Angular, or Vue.js

2. Compliance and Security Requirements

Healthcare systems needing HIPAA compliance
Financial services requiring audit trails
Legal document management with redaction
Government applications with security mandates

3. Complex Document Processing

Multi-format document conversion (DOCX, HTML, Images)
OCR integration for scanned documents
Batch processing with parallel execution
Documents with digital signatures

4. Cross-Platform Deployment

Docker containerized applications
Linux-based cloud deployments
Microservices architectures
Serverless functions (AWS Lambda, Azure Functions)

Real-World Example: Healthcare Report Generation

public class HealthcareReportGenerator
{
    private readonly ChromePdfRenderer _renderer;

    public HealthcareReportGenerator()
    {
        _renderer = new ChromePdfRenderer
        {
            RenderingOptions = new ChromePdfRenderOptions
            {
                DPI = 300, // High quality for medical imaging
                EnableJavaScript = true,
                RenderDelay = 3000, // Allow charts to fully render
                CreatePdfFormsFromHtml = true
            }
        };
    }

    public async Task<byte[]> GeneratePatientReport(PatientData patient)
    {
        // Generate HTML with patient data and charts
        var html = await GenerateReportHtml(patient);

        // Convert to PDF
        var pdf = await _renderer.RenderHtmlAsPdfAsync(html);

        // Apply security and compliance
        pdf.SecuritySettings = new SecuritySettings
        {
            AllowPrint = true,
            AllowCopy = false,
            EncryptionLevel = EncryptionLevel.AES256Bit,
            UserPassword = patient.AccessCode
        };

        // Redact SSN except last 4 digits
        pdf.RedactTextOnAllPages(@"\b\d{3}-\d{2}-(\d{4})\b", 
            replacement: "XXX-XX-$1", 
            isRegex: true);

        // Add audit metadata
        pdf.MetaData.Author = "Healthcare System";
        pdf.MetaData.Title = $"Patient Report - {patient.PatientId}";
        pdf.MetaData.CreationDate = DateTime.UtcNow;
        pdf.MetaData.CustomProperties.Add("HIPAA_Compliant", "true");

        // Add digital signature
        var signature = new PdfSignature("hospital-cert.pfx", "password")
        {
            SigningReason = "Medical Record Authenticity",
            SigningLocation = "Hospital Name"
        };
        pdf.Sign(signature);

        return pdf.BinaryData;
    }
}

public class HealthcareReportGenerator
{
    private readonly ChromePdfRenderer _renderer;

    public HealthcareReportGenerator()
    {
        _renderer = new ChromePdfRenderer
        {
            RenderingOptions = new ChromePdfRenderOptions
            {
                DPI = 300, // High quality for medical imaging
                EnableJavaScript = true,
                RenderDelay = 3000, // Allow charts to fully render
                CreatePdfFormsFromHtml = true
            }
        };
    }

    public async Task<byte[]> GeneratePatientReport(PatientData patient)
    {
        // Generate HTML with patient data and charts
        var html = await GenerateReportHtml(patient);

        // Convert to PDF
        var pdf = await _renderer.RenderHtmlAsPdfAsync(html);

        // Apply security and compliance
        pdf.SecuritySettings = new SecuritySettings
        {
            AllowPrint = true,
            AllowCopy = false,
            EncryptionLevel = EncryptionLevel.AES256Bit,
            UserPassword = patient.AccessCode
        };

        // Redact SSN except last 4 digits
        pdf.RedactTextOnAllPages(@"\b\d{3}-\d{2}-(\d{4})\b", 
            replacement: "XXX-XX-$1", 
            isRegex: true);

        // Add audit metadata
        pdf.MetaData.Author = "Healthcare System";
        pdf.MetaData.Title = $"Patient Report - {patient.PatientId}";
        pdf.MetaData.CreationDate = DateTime.UtcNow;
        pdf.MetaData.CustomProperties.Add("HIPAA_Compliant", "true");

        // Add digital signature
        var signature = new PdfSignature("hospital-cert.pfx", "password")
        {
            SigningReason = "Medical Record Authenticity",
            SigningLocation = "Hospital Name"
        };
        pdf.Sign(signature);

        return pdf.BinaryData;
    }
}

Public Class HealthcareReportGenerator
	Private ReadOnly _renderer As ChromePdfRenderer

	Public Sub New()
		_renderer = New ChromePdfRenderer With {
			.RenderingOptions = New ChromePdfRenderOptions With {
				.DPI = 300,
				.EnableJavaScript = True,
				.RenderDelay = 3000,
				.CreatePdfFormsFromHtml = True
			}
		}
	End Sub

	Public Async Function GeneratePatientReport(ByVal patient As PatientData) As Task(Of Byte())
		' Generate HTML with patient data and charts
		Dim html = Await GenerateReportHtml(patient)

		' Convert to PDF
		Dim pdf = Await _renderer.RenderHtmlAsPdfAsync(html)

		' Apply security and compliance
		pdf.SecuritySettings = New SecuritySettings With {
			.AllowPrint = True,
			.AllowCopy = False,
			.EncryptionLevel = EncryptionLevel.AES256Bit,
			.UserPassword = patient.AccessCode
		}

		' Redact SSN except last 4 digits
		pdf.RedactTextOnAllPages("\b\d{3}-\d{2}-(\d{4})\b", replacement:= "XXX-XX-$1", isRegex:= True)

		' Add audit metadata
		pdf.MetaData.Author = "Healthcare System"
		pdf.MetaData.Title = $"Patient Report - {patient.PatientId}"
		pdf.MetaData.CreationDate = DateTime.UtcNow
		pdf.MetaData.CustomProperties.Add("HIPAA_Compliant", "true")

		' Add digital signature
		Dim signature = New PdfSignature("hospital-cert.pfx", "password") With {
			.SigningReason = "Medical Record Authenticity",
			.SigningLocation = "Hospital Name"
		}
		pdf.Sign(signature)

		Return pdf.BinaryData
	End Function
End Class

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When to Choose EvoPdf

EvoPdf is well-suited for:

1. Simple HTML to PDF Conversion

Basic reports without complex JavaScript
Static HTML templates
Simple invoices and receipts
Bulk document generation with consistent templates

2. Budget-Conscious Teams

Unlimited developers on a single license
Lower entry cost for basic features
Projects not requiring advanced PDF manipulation

3. Specific Server Environments

Windows-centric deployments
Applications with simple PDF requirements
Legacy system integration

4. High-Volume Simple Conversions

Email-to-PDF archiving
Static report generation
Documentation systems
Print-ready document creation

Real-World Example: Invoice Generation System

public class InvoiceGenerator
{
    private readonly HtmlToPdfConverter _converter;

    public InvoiceGenerator()
    {
        _converter = new HtmlToPdfConverter
        {
            LicenseKey = "your-license-key",
            JavaScriptEnabled = false, // Not needed for static invoices
            ConversionDelay = 0
        };

        // Configure for A4 invoices
        _converter.PdfDocumentOptions.PdfPageSize = PdfPageSize.A4;
        _converter.PdfDocumentOptions.TopMargin = 30;
        _converter.PdfDocumentOptions.BottomMargin = 30;
    }

    public byte[] GenerateInvoice(InvoiceData data)
    {
        // Load HTML template
        var template = File.ReadAllText("invoice-template.html");

        // Simple string replacement for data
        var html = template
            .Replace("{{InvoiceNumber}}", data.InvoiceNumber)
            .Replace("{{Date}}", data.Date.ToString("yyyy-MM-dd"))
            .Replace("{{CustomerName}}", data.CustomerName)
            .Replace("{{Total}}", data.Total.ToString("C"));

        // Convert to PDF
        return _converter.ConvertHtml(html, "");
    }
}

public class InvoiceGenerator
{
    private readonly HtmlToPdfConverter _converter;

    public InvoiceGenerator()
    {
        _converter = new HtmlToPdfConverter
        {
            LicenseKey = "your-license-key",
            JavaScriptEnabled = false, // Not needed for static invoices
            ConversionDelay = 0
        };

        // Configure for A4 invoices
        _converter.PdfDocumentOptions.PdfPageSize = PdfPageSize.A4;
        _converter.PdfDocumentOptions.TopMargin = 30;
        _converter.PdfDocumentOptions.BottomMargin = 30;
    }

    public byte[] GenerateInvoice(InvoiceData data)
    {
        // Load HTML template
        var template = File.ReadAllText("invoice-template.html");

        // Simple string replacement for data
        var html = template
            .Replace("{{InvoiceNumber}}", data.InvoiceNumber)
            .Replace("{{Date}}", data.Date.ToString("yyyy-MM-dd"))
            .Replace("{{CustomerName}}", data.CustomerName)
            .Replace("{{Total}}", data.Total.ToString("C"));

        // Convert to PDF
        return _converter.ConvertHtml(html, "");
    }
}

Public Class InvoiceGenerator
	Private ReadOnly _converter As HtmlToPdfConverter

	Public Sub New()
		_converter = New HtmlToPdfConverter With {
			.LicenseKey = "your-license-key",
			.JavaScriptEnabled = False,
			.ConversionDelay = 0
		}

		' Configure for A4 invoices
		_converter.PdfDocumentOptions.PdfPageSize = PdfPageSize.A4
		_converter.PdfDocumentOptions.TopMargin = 30
		_converter.PdfDocumentOptions.BottomMargin = 30
	End Sub

	Public Function GenerateInvoice(ByVal data As InvoiceData) As Byte()
		' Load HTML template
		Dim template = File.ReadAllText("invoice-template.html")

		' Simple string replacement for data
		Dim html = template.Replace("{{InvoiceNumber}}", data.InvoiceNumber).Replace("{{Date}}", data.Date.ToString("yyyy-MM-dd")).Replace("{{CustomerName}}", data.CustomerName).Replace("{{Total}}", data.Total.ToString("C"))

		' Convert to PDF
		Return _converter.ConvertHtml(html, "")
	End Function
End Class

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Advanced Implementation Patterns and Best Practices

Optimizing Performance in Production

Both libraries benefit from proper configuration and usage patterns:

IronPDF Performance Optimization

public class OptimizedPdfService
{
    private readonly ChromePdfRenderer _renderer;
    private readonly SemaphoreSlim _semaphore;

    public OptimizedPdfService(int maxConcurrency = 4)
    {
        _semaphore = new SemaphoreSlim(maxConcurrency);

        _renderer = new ChromePdfRenderer
        {
            RenderingOptions = new ChromePdfRenderOptions
            {
                // Optimize for performance
                EnableJavaScript = false, // Only if not needed
                RenderDelay = 0,
                DPI = 150, // Balance quality vs speed
                CssMediaType = PdfCssMediaType.Screen,
                Timeout = 30,

                // Memory optimization
                OptimizeForLowMemory = true
            }
        };

        // Enable connection pooling
        Installation.ChromeGpuMode = ChromeGpuModes.Disabled;
        Installation.LinuxAndDockerDependenciesAutoConfig = false;
    }

    public async Task<byte[]> GeneratePdfAsync(string html)
    {
        await _semaphore.WaitAsync();
        try
        {
            var pdf = await _renderer.RenderHtmlAsPdfAsync(html);

            // Optimize file size
            pdf.CompressImages(85);
            pdf.RemoveUnusedResources();

            return pdf.BinaryData;
        }
        finally
        {
            _semaphore.Release();
        }
    }
}

public class OptimizedPdfService
{
    private readonly ChromePdfRenderer _renderer;
    private readonly SemaphoreSlim _semaphore;

    public OptimizedPdfService(int maxConcurrency = 4)
    {
        _semaphore = new SemaphoreSlim(maxConcurrency);

        _renderer = new ChromePdfRenderer
        {
            RenderingOptions = new ChromePdfRenderOptions
            {
                // Optimize for performance
                EnableJavaScript = false, // Only if not needed
                RenderDelay = 0,
                DPI = 150, // Balance quality vs speed
                CssMediaType = PdfCssMediaType.Screen,
                Timeout = 30,

                // Memory optimization
                OptimizeForLowMemory = true
            }
        };

        // Enable connection pooling
        Installation.ChromeGpuMode = ChromeGpuModes.Disabled;
        Installation.LinuxAndDockerDependenciesAutoConfig = false;
    }

    public async Task<byte[]> GeneratePdfAsync(string html)
    {
        await _semaphore.WaitAsync();
        try
        {
            var pdf = await _renderer.RenderHtmlAsPdfAsync(html);

            // Optimize file size
            pdf.CompressImages(85);
            pdf.RemoveUnusedResources();

            return pdf.BinaryData;
        }
        finally
        {
            _semaphore.Release();
        }
    }
}

Public Class OptimizedPdfService
	Private ReadOnly _renderer As ChromePdfRenderer
	Private ReadOnly _semaphore As SemaphoreSlim

	Public Sub New(Optional ByVal maxConcurrency As Integer = 4)
		_semaphore = New SemaphoreSlim(maxConcurrency)

		_renderer = New ChromePdfRenderer With {
			.RenderingOptions = New ChromePdfRenderOptions With {
				.EnableJavaScript = False,
				.RenderDelay = 0,
				.DPI = 150,
				.CssMediaType = PdfCssMediaType.Screen,
				.Timeout = 30,
				.OptimizeForLowMemory = True
			}
		}

		' Enable connection pooling
		Installation.ChromeGpuMode = ChromeGpuModes.Disabled
		Installation.LinuxAndDockerDependenciesAutoConfig = False
	End Sub

	Public Async Function GeneratePdfAsync(ByVal html As String) As Task(Of Byte())
		Await _semaphore.WaitAsync()
		Try
			Dim pdf = Await _renderer.RenderHtmlAsPdfAsync(html)

			' Optimize file size
			pdf.CompressImages(85)
			pdf.RemoveUnusedResources()

			Return pdf.BinaryData
		Finally
			_semaphore.Release()
		End Try
	End Function
End Class

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EvoPdf Performance Patterns

public class EvoPdfOptimizedService
{
    private readonly ObjectPool<HtmlToPdfConverter> _converterPool;

    public EvoPdfOptimizedService()
    {
        // Create object pool for converter reuse
        _converterPool = new DefaultObjectPool<HtmlToPdfConverter>(
            new ConverterPoolPolicy(), 
            Environment.ProcessorCount * 2);
    }

    public async Task<byte[]> GeneratePdfAsync(string html)
    {
        var converter = _converterPool.Get();
        try
        {
            // Configure for speed
            converter.ConversionDelay = 0;
            converter.JavaScriptEnabled = false;

            // Use async pattern
            return await Task.Run(() => converter.ConvertHtml(html, ""));
        }
        finally
        {
            _converterPool.Return(converter);
        }
    }

    private class ConverterPoolPolicy : IPooledObjectPolicy<HtmlToPdfConverter>
    {
        public HtmlToPdfConverter Create()
        {
            return new HtmlToPdfConverter
            {
                LicenseKey = "your-license-key"
            };
        }

        public bool Return(HtmlToPdfConverter obj)
        {
            // Reset to default state
            obj.ConversionDelay = 2;
            return true;
        }
    }
}

public class EvoPdfOptimizedService
{
    private readonly ObjectPool<HtmlToPdfConverter> _converterPool;

    public EvoPdfOptimizedService()
    {
        // Create object pool for converter reuse
        _converterPool = new DefaultObjectPool<HtmlToPdfConverter>(
            new ConverterPoolPolicy(), 
            Environment.ProcessorCount * 2);
    }

    public async Task<byte[]> GeneratePdfAsync(string html)
    {
        var converter = _converterPool.Get();
        try
        {
            // Configure for speed
            converter.ConversionDelay = 0;
            converter.JavaScriptEnabled = false;

            // Use async pattern
            return await Task.Run(() => converter.ConvertHtml(html, ""));
        }
        finally
        {
            _converterPool.Return(converter);
        }
    }

    private class ConverterPoolPolicy : IPooledObjectPolicy<HtmlToPdfConverter>
    {
        public HtmlToPdfConverter Create()
        {
            return new HtmlToPdfConverter
            {
                LicenseKey = "your-license-key"
            };
        }

        public bool Return(HtmlToPdfConverter obj)
        {
            // Reset to default state
            obj.ConversionDelay = 2;
            return true;
        }
    }
}

Public Class EvoPdfOptimizedService
	Private ReadOnly _converterPool As ObjectPool(Of HtmlToPdfConverter)

	Public Sub New()
		' Create object pool for converter reuse
		_converterPool = New DefaultObjectPool(Of HtmlToPdfConverter)(New ConverterPoolPolicy(), Environment.ProcessorCount * 2)
	End Sub

	Public Async Function GeneratePdfAsync(ByVal html As String) As Task(Of Byte())
		Dim converter = _converterPool.Get()
		Try
			' Configure for speed
			converter.ConversionDelay = 0
			converter.JavaScriptEnabled = False

			' Use async pattern
			Return Await Task.Run(Function() converter.ConvertHtml(html, ""))
		Finally
			_converterPool.Return(converter)
		End Try
	End Function

	Private Class ConverterPoolPolicy
		Implements IPooledObjectPolicy(Of HtmlToPdfConverter)

		Public Function Create() As HtmlToPdfConverter
			Return New HtmlToPdfConverter With {.LicenseKey = "your-license-key"}
		End Function

		Public Function [Return](ByVal obj As HtmlToPdfConverter) As Boolean
			' Reset to default state
			obj.ConversionDelay = 2
			Return True
		End Function
	End Class
End Class

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Error Handling and Debugging

Robust error handling is crucial for production applications:

IronPDF Error Handling

public class RobustPdfGenerator
{
    private readonly ILogger<RobustPdfGenerator> _logger;
    private readonly ChromePdfRenderer _renderer;

    public async Task<Result<byte[]>> TryGeneratePdfAsync(string html)
    {
        try
        {
            // Enable detailed logging
            IronPdf.Logging.Logger.EnableDebugging = true;
            IronPdf.Logging.Logger.LogFilePath = "ironpdf.log";
            IronPdf.Logging.Logger.LoggingLevel = LoggingLevels.All;

            var pdf = await _renderer.RenderHtmlAsPdfAsync(html);

            // Validate output
            if (pdf.PageCount == 0)
            {
                return Result<byte[]>.Failure("Generated PDF has no pages");
            }

            return Result<byte[]>.Success(pdf.BinaryData);
        }
        catch (IronPdf.Exceptions.IronPdfRenderException ex)
        {
            _logger.LogError(ex, "Rendering failed: {Message}", ex.Message);

            // Attempt fallback with simpler settings
            return await FallbackRender(html);
        }
        catch (Exception ex)
        {
            _logger.LogError(ex, "Unexpected error in PDF generation");
            return Result<byte[]>.Failure($"PDF generation failed: {ex.Message}");
        }
    }

    private async Task<Result<byte[]>> FallbackRender(string html)
    {
        var fallbackRenderer = new ChromePdfRenderer
        {
            RenderingOptions = new ChromePdfRenderOptions
            {
                EnableJavaScript = false,
                DPI = 96,
                Timeout = 60
            }
        };

        try
        {
            var pdf = await fallbackRenderer.RenderHtmlAsPdfAsync(html);
            return Result<byte[]>.Success(pdf.BinaryData);
        }
        catch (Exception ex)
        {
            return Result<byte[]>.Failure($"Fallback render failed: {ex.Message}");
        }
    }
}

public class RobustPdfGenerator
{
    private readonly ILogger<RobustPdfGenerator> _logger;
    private readonly ChromePdfRenderer _renderer;

    public async Task<Result<byte[]>> TryGeneratePdfAsync(string html)
    {
        try
        {
            // Enable detailed logging
            IronPdf.Logging.Logger.EnableDebugging = true;
            IronPdf.Logging.Logger.LogFilePath = "ironpdf.log";
            IronPdf.Logging.Logger.LoggingLevel = LoggingLevels.All;

            var pdf = await _renderer.RenderHtmlAsPdfAsync(html);

            // Validate output
            if (pdf.PageCount == 0)
            {
                return Result<byte[]>.Failure("Generated PDF has no pages");
            }

            return Result<byte[]>.Success(pdf.BinaryData);
        }
        catch (IronPdf.Exceptions.IronPdfRenderException ex)
        {
            _logger.LogError(ex, "Rendering failed: {Message}", ex.Message);

            // Attempt fallback with simpler settings
            return await FallbackRender(html);
        }
        catch (Exception ex)
        {
            _logger.LogError(ex, "Unexpected error in PDF generation");
            return Result<byte[]>.Failure($"PDF generation failed: {ex.Message}");
        }
    }

    private async Task<Result<byte[]>> FallbackRender(string html)
    {
        var fallbackRenderer = new ChromePdfRenderer
        {
            RenderingOptions = new ChromePdfRenderOptions
            {
                EnableJavaScript = false,
                DPI = 96,
                Timeout = 60
            }
        };

        try
        {
            var pdf = await fallbackRenderer.RenderHtmlAsPdfAsync(html);
            return Result<byte[]>.Success(pdf.BinaryData);
        }
        catch (Exception ex)
        {
            return Result<byte[]>.Failure($"Fallback render failed: {ex.Message}");
        }
    }
}

Public Class RobustPdfGenerator
	Private ReadOnly _logger As ILogger(Of RobustPdfGenerator)
	Private ReadOnly _renderer As ChromePdfRenderer

	Public Async Function TryGeneratePdfAsync(ByVal html As String) As Task(Of Result(Of Byte()))
		Try
			' Enable detailed logging
			IronPdf.Logging.Logger.EnableDebugging = True
			IronPdf.Logging.Logger.LogFilePath = "ironpdf.log"
			IronPdf.Logging.Logger.LoggingLevel = LoggingLevels.All

			Dim pdf = Await _renderer.RenderHtmlAsPdfAsync(html)

			' Validate output
			If pdf.PageCount = 0 Then
				Return Result(Of Byte()).Failure("Generated PDF has no pages")
			End If

			Return Result(Of Byte()).Success(pdf.BinaryData)
		Catch ex As IronPdf.Exceptions.IronPdfRenderException
			_logger.LogError(ex, "Rendering failed: {Message}", ex.Message)

			' Attempt fallback with simpler settings
			Return Await FallbackRender(html)
		Catch ex As Exception
			_logger.LogError(ex, "Unexpected error in PDF generation")
			Return Result(Of Byte()).Failure($"PDF generation failed: {ex.Message}")
		End Try
	End Function

	Private Async Function FallbackRender(ByVal html As String) As Task(Of Result(Of Byte()))
		Dim fallbackRenderer = New ChromePdfRenderer With {
			.RenderingOptions = New ChromePdfRenderOptions With {
				.EnableJavaScript = False,
				.DPI = 96,
				.Timeout = 60
			}
		}

		Try
			Dim pdf = Await fallbackRenderer.RenderHtmlAsPdfAsync(html)
			Return Result(Of Byte()).Success(pdf.BinaryData)
		Catch ex As Exception
			Return Result(Of Byte()).Failure($"Fallback render failed: {ex.Message}")
		End Try
	End Function
End Class

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Industry-Specific Implementation Examples

Financial Services: Regulatory Compliance

Financial institutions require specific features for compliance:

public class FinancialStatementGenerator
{
    public async Task<byte[]> GenerateQuarterlyReport(FinancialData data)
    {
        var renderer = new ChromePdfRenderer();

        // Generate report with charts and tables
        var html = await BuildFinancialReportHtml(data);
        var pdf = renderer.RenderHtmlAsPdf(html);

        // Add compliance watermark
        pdf.ApplyWatermark(@"
            <div style='text-align: center; color: rgba(0,0,0,0.1); font-size: 120px;
                        transform: rotate(-45deg); font-family: Arial;'>
                DRAFT
            </div>", 30, VerticalAlignment.Middle, HorizontalAlignment.Center);

        // Embed audit information
        pdf.MetaData.Author = "Financial Reporting System";
        pdf.MetaData.Keywords = "Quarterly Report, SOX Compliant";
        pdf.MetaData.CustomProperties.Add("ReportPeriod", data.Quarter);
        pdf.MetaData.CustomProperties.Add("GeneratedBy", Environment.UserName);
        pdf.MetaData.CustomProperties.Add("Timestamp", DateTime.UtcNow.ToString("O"));

        // Apply tamper-evident signature
        var cert = new X509Certificate2("financial-cert.pfx", "password");
        var signature = new PdfSignature(cert)
        {
            SigningReason = "Financial Report Certification",
            SigningLocation = "Corporate Finance Department",
            IsVisible = true,
            SignatureImage = new PdfSignatureImage("cfo-signature.png")
        };

        pdf.Sign(signature);

        // Lock document from editing
        pdf.SecuritySettings = new SecuritySettings
        {
            AllowModifyDocument = false,
            AllowCopy = true,
            AllowPrint = true,
            EncryptionLevel = EncryptionLevel.AES256Bit
        };

        return pdf.BinaryData;
    }
}

public class FinancialStatementGenerator
{
    public async Task<byte[]> GenerateQuarterlyReport(FinancialData data)
    {
        var renderer = new ChromePdfRenderer();

        // Generate report with charts and tables
        var html = await BuildFinancialReportHtml(data);
        var pdf = renderer.RenderHtmlAsPdf(html);

        // Add compliance watermark
        pdf.ApplyWatermark(@"
            <div style='text-align: center; color: rgba(0,0,0,0.1); font-size: 120px;
                        transform: rotate(-45deg); font-family: Arial;'>
                DRAFT
            </div>", 30, VerticalAlignment.Middle, HorizontalAlignment.Center);

        // Embed audit information
        pdf.MetaData.Author = "Financial Reporting System";
        pdf.MetaData.Keywords = "Quarterly Report, SOX Compliant";
        pdf.MetaData.CustomProperties.Add("ReportPeriod", data.Quarter);
        pdf.MetaData.CustomProperties.Add("GeneratedBy", Environment.UserName);
        pdf.MetaData.CustomProperties.Add("Timestamp", DateTime.UtcNow.ToString("O"));

        // Apply tamper-evident signature
        var cert = new X509Certificate2("financial-cert.pfx", "password");
        var signature = new PdfSignature(cert)
        {
            SigningReason = "Financial Report Certification",
            SigningLocation = "Corporate Finance Department",
            IsVisible = true,
            SignatureImage = new PdfSignatureImage("cfo-signature.png")
        };

        pdf.Sign(signature);

        // Lock document from editing
        pdf.SecuritySettings = new SecuritySettings
        {
            AllowModifyDocument = false,
            AllowCopy = true,
            AllowPrint = true,
            EncryptionLevel = EncryptionLevel.AES256Bit
        };

        return pdf.BinaryData;
    }
}

Public Class FinancialStatementGenerator
	Public Async Function GenerateQuarterlyReport(ByVal data As FinancialData) As Task(Of Byte())
		Dim renderer = New ChromePdfRenderer()

		' Generate report with charts and tables
		Dim html = Await BuildFinancialReportHtml(data)
		Dim pdf = renderer.RenderHtmlAsPdf(html)

		' Add compliance watermark
		pdf.ApplyWatermark("
            <div style='text-align: center; color: rgba(0,0,0,0.1); font-size: 120px;
                        transform: rotate(-45deg); font-family: Arial;'>
                DRAFT
            </div>", 30, VerticalAlignment.Middle, HorizontalAlignment.Center)

		' Embed audit information
		pdf.MetaData.Author = "Financial Reporting System"
		pdf.MetaData.Keywords = "Quarterly Report, SOX Compliant"
		pdf.MetaData.CustomProperties.Add("ReportPeriod", data.Quarter)
		pdf.MetaData.CustomProperties.Add("GeneratedBy", Environment.UserName)
		pdf.MetaData.CustomProperties.Add("Timestamp", DateTime.UtcNow.ToString("O"))

		' Apply tamper-evident signature
		Dim cert = New X509Certificate2("financial-cert.pfx", "password")
		Dim signature = New PdfSignature(cert) With {
			.SigningReason = "Financial Report Certification",
			.SigningLocation = "Corporate Finance Department",
			.IsVisible = True,
			.SignatureImage = New PdfSignatureImage("cfo-signature.png")
		}

		pdf.Sign(signature)

		' Lock document from editing
		pdf.SecuritySettings = New SecuritySettings With {
			.AllowModifyDocument = False,
			.AllowCopy = True,
			.AllowPrint = True,
			.EncryptionLevel = EncryptionLevel.AES256Bit
		}

		Return pdf.BinaryData
	End Function
End Class

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E-Commerce: Dynamic Invoice Generation

E-commerce platforms need fast, reliable invoice generation:

public class EcommerceInvoiceService
{
    private readonly ChromePdfRenderer _renderer;

    public EcommerceInvoiceService()
    {
        _renderer = new ChromePdfRenderer
        {
            RenderingOptions = new ChromePdfRenderOptions
            {
                MarginTop = 10,
                MarginBottom = 10,
                PaperSize = PdfPaperSize.A4,
                DPI = 200 // High quality for barcodes
            }
        };
    }

    public async Task<byte[]> GenerateInvoice(Order order)
    {
        // Build invoice HTML with order details
        var html = $@"
        <html>
        <head>
            <style>
                @page {{ size: A4; margin: 0; }}
                body {{ font-family: Arial, sans-serif; }}
                .invoice-header {{ background: #f0f0f0; padding: 20px; }}
                .barcode {{ text-align: center; margin: 20px 0; }}
                table {{ width: 100%; border-collapse: collapse; }}
                th, td {{ padding: 10px; border-bottom: 1px solid #ddd; }}
            </style>
        </head>
        <body>
            <div class='invoice-header'>
                <h1>Invoice #{order.InvoiceNumber}</h1>
                <p>Date: {order.Date:yyyy-MM-dd}</p>
            </div>

            <div class='barcode'>
                <img src='data:image/png;base64,{GenerateBarcode(order.InvoiceNumber)}' />
            </div>

            <table>
                <tr>
                    <th>Item</th>
                    <th>Quantity</th>
                    <th>Price</th>
                    <th>Total</th>
                </tr>
                {string.Join("", order.Items.Select(item => $@"
                <tr>
                    <td>{item.Name}</td>
                    <td>{item.Quantity}</td>
                    <td>${item.Price:F2}</td>
                    <td>${item.Total:F2}</td>
                </tr>"))}
                <tr>
                    <td colspan='3'><strong>Total</strong></td>
                    <td><strong>${order.Total:F2}</strong></td>
                </tr>
            </table>

            <div class='footer'>
                <p>Thank you for your business!</p>
                <p>Return policy and terms at: www.example.com/terms</p>
            </div>
        </body>
        </html>";

        var pdf = await _renderer.RenderHtmlAsPdfAsync(html);

        // Add QR code for mobile payment verification
        var qrStamper = new ImageStamper($"https://api.qrserver.com/v1/create-qr-code/?data={order.PaymentId}")
        {
            HorizontalAlignment = HorizontalAlignment.Right,
            VerticalAlignment = VerticalAlignment.Bottom,
            Width = 100,
            Height = 100
        };

        pdf.ApplyStamp(qrStamper);

        return pdf.BinaryData;
    }
}

public class EcommerceInvoiceService
{
    private readonly ChromePdfRenderer _renderer;

    public EcommerceInvoiceService()
    {
        _renderer = new ChromePdfRenderer
        {
            RenderingOptions = new ChromePdfRenderOptions
            {
                MarginTop = 10,
                MarginBottom = 10,
                PaperSize = PdfPaperSize.A4,
                DPI = 200 // High quality for barcodes
            }
        };
    }

    public async Task<byte[]> GenerateInvoice(Order order)
    {
        // Build invoice HTML with order details
        var html = $@"
        <html>
        <head>
            <style>
                @page {{ size: A4; margin: 0; }}
                body {{ font-family: Arial, sans-serif; }}
                .invoice-header {{ background: #f0f0f0; padding: 20px; }}
                .barcode {{ text-align: center; margin: 20px 0; }}
                table {{ width: 100%; border-collapse: collapse; }}
                th, td {{ padding: 10px; border-bottom: 1px solid #ddd; }}
            </style>
        </head>
        <body>
            <div class='invoice-header'>
                <h1>Invoice #{order.InvoiceNumber}</h1>
                <p>Date: {order.Date:yyyy-MM-dd}</p>
            </div>

            <div class='barcode'>
                <img src='data:image/png;base64,{GenerateBarcode(order.InvoiceNumber)}' />
            </div>

            <table>
                <tr>
                    <th>Item</th>
                    <th>Quantity</th>
                    <th>Price</th>
                    <th>Total</th>
                </tr>
                {string.Join("", order.Items.Select(item => $@"
                <tr>
                    <td>{item.Name}</td>
                    <td>{item.Quantity}</td>
                    <td>${item.Price:F2}</td>
                    <td>${item.Total:F2}</td>
                </tr>"))}
                <tr>
                    <td colspan='3'><strong>Total</strong></td>
                    <td><strong>${order.Total:F2}</strong></td>
                </tr>
            </table>

            <div class='footer'>
                <p>Thank you for your business!</p>
                <p>Return policy and terms at: www.example.com/terms</p>
            </div>
        </body>
        </html>";

        var pdf = await _renderer.RenderHtmlAsPdfAsync(html);

        // Add QR code for mobile payment verification
        var qrStamper = new ImageStamper($"https://api.qrserver.com/v1/create-qr-code/?data={order.PaymentId}")
        {
            HorizontalAlignment = HorizontalAlignment.Right,
            VerticalAlignment = VerticalAlignment.Bottom,
            Width = 100,
            Height = 100
        };

        pdf.ApplyStamp(qrStamper);

        return pdf.BinaryData;
    }
}

Public Class EcommerceInvoiceService
	Private ReadOnly _renderer As ChromePdfRenderer

	Public Sub New()
		_renderer = New ChromePdfRenderer With {
			.RenderingOptions = New ChromePdfRenderOptions With {
				.MarginTop = 10,
				.MarginBottom = 10,
				.PaperSize = PdfPaperSize.A4,
				.DPI = 200
			}
		}
	End Sub

	Public Async Function GenerateInvoice(ByVal order As Order) As Task(Of Byte())
		' Build invoice HTML with order details
, order.InvoiceNumbstring.Format(r, order.Date, GenerateBarcode(order.InvoiceNumber), String.Join(TangibleTempVerbatimDoubleQuote, order.Items.Select(Function(item) $TangibleTempVerbatimCloseTag"ignoreignoreignoreignoreignoreignoreignoreignoreignoreignoreignoreignoreignoreignoreignoreignoreignoreignoreignoreignoreignoreignoreignoreignoreignoreignoreignoreignoreignore<tr><td>{item.Name}</td><td>{item.Quantity}</td><td>${item.Price:F2}</td><td>${item.Total:F2}</td></tr>")), TangibleStringInterpolationMarker) var html = $"TangibleTempVerbatimOpenTagTangibleTempVerbatimStringLiteralLineJoin        <html>TangibleTempVerbatimStringLiteralLineJoin        <head>TangibleTempVerbatimStringLiteralLineJoin            <style>TangibleTempVerbatimStringLiteralLineJoin                @page {{ size: A4; margin: 0; }}TangibleTempVerbatimStringLiteralLineJoin                body {{ font-family: Arial, sans-serif; }}TangibleTempVerbatimStringLiteralLineJoin                .invoice-header {{ background: #f0f0f0; padding: 20px; }}TangibleTempVerbatimStringLiteralLineJoin                .barcode {{ text-align: center; margin: 20px 0; }}TangibleTempVerbatimStringLiteralLineJoin                table {{ width: 100%; border-collapse: collapse; }}TangibleTempVerbatimStringLiteralLineJoin                th, td {{ padding: 10px; border-bottom: 1px solid #ddd; }}TangibleTempVerbatimStringLiteralLineJoin            </style>TangibleTempVerbatimStringLiteralLineJoin        </head>TangibleTempVerbatimStringLiteralLineJoin        <body>TangibleTempVerbatimStringLiteralLineJoin            <div class='invoice-header'>TangibleTempVerbatimStringLiteralLineJoin                <h1>Invoice #{0}</h1>TangibleTempVerbatimStringLiteralLineJoin                <p>Date: {1:yyyy-MM-dd}</p>TangibleTempVerbatimStringLiteralLineJoin            </div>TangibleTempVerbatimStringLiteralLineJoinTangibleTempVerbatimStringLiteralLineJoin            <div class='barcode'>TangibleTempVerbatimStringLiteralLineJoin                <img src='data:image/png;base64,{2}' />TangibleTempVerbatimStringLiteralLineJoin            </div>TangibleTempVerbatimStringLiteralLineJoinTangibleTempVerbatimStringLiteralLineJoin            <table>TangibleTempVerbatimStringLiteralLineJoin                <tr>TangibleTempVerbatimStringLiteralLineJoin                    <th>Item</th>TangibleTempVerbatimStringLiteralLineJoin                    <th>Quantity</th>TangibleTempVerbatimStringLiteralLineJoin                    <th>Price</th>TangibleTempVerbatimStringLiteralLineJoin                    <th>Total</th>TangibleTempVerbatimStringLiteralLineJoin                </tr>TangibleTempVerbatimStringLiteralLineJoin                {3}ignoreignoreignoreignoreignoreignoreignoreignoreignoreignoreignoreignoreignoreignoreignoreignoreignoreignoreignoreignoreignoreignoreignoreignoreignoreignoreignoreignoreignoreignoreignoreignoreignoreignoreignore<tr><td colspan='3'><strong>Total</strong></td><td><strong>${order.Total:F2}</strong></td></tr></table><div class='footer'><p>Thank you for your business!</p><p>Return policy and terms at: www.example.com/terms</p></div></body></html>"

		Dim pdf = Await _renderer.RenderHtmlAsPdfAsync(html)

		' Add QR code for mobile payment verification
		Dim qrStamper = New ImageStamper($"https://api.qrserver.com/v1/create-qr-code/?data={order.PaymentId}") With {
			.HorizontalAlignment = HorizontalAlignment.Right,
			.VerticalAlignment = VerticalAlignment.Bottom,
			.Width = 100,
			.Height = 100
		}

		pdf.ApplyStamp(qrStamper)

		Return pdf.BinaryData
	End Function
End Class

$vbLabelText $csharpLabel

Migration Strategies: Moving Between Libraries

If you're considering switching between libraries, here's a migration approach:

Migrating from EvoPdf to IronPDF

// EvoPdf pattern
HtmlToPdfConverter evoPdfConverter = new HtmlToPdfConverter();
evoPdfConverter.PdfDocumentOptions.PdfPageSize = PdfPageSize.A4;
byte[] pdfBytes = evoPdfConverter.ConvertUrl(url);

// Equivalent IronPDF pattern
var ironPdfRenderer = new ChromePdfRenderer
{
    RenderingOptions = new ChromePdfRenderOptions
    {
        PaperSize = PdfPaperSize.A4
    }
};
var pdf = ironPdfRenderer.RenderUrlAsPdf(url);
byte[] pdfBytes = pdf.BinaryData;

// Migration wrapper for gradual transition
public interface IPdfConverter
{
    byte[] ConvertHtmlToPdf(string html);
    byte[] ConvertUrlToPdf(string url);
}

public class IronPdfAdapter : IPdfConverter
{
    private readonly ChromePdfRenderer _renderer = new ChromePdfRenderer();

    public byte[] ConvertHtmlToPdf(string html)
    {
        return _renderer.RenderHtmlAsPdf(html).BinaryData;
    }

    public byte[] ConvertUrlToPdf(string url)
    {
        return _renderer.RenderUrlAsPdf(url).BinaryData;
    }
}

public class EvoPdfAdapter : IPdfConverter
{
    private readonly HtmlToPdfConverter _converter = new HtmlToPdfConverter();

    public byte[] ConvertHtmlToPdf(string html)
    {
        return _converter.ConvertHtml(html, "");
    }

    public byte[] ConvertUrlToPdf(string url)
    {
        return _converter.ConvertUrl(url);
    }
}

// EvoPdf pattern
HtmlToPdfConverter evoPdfConverter = new HtmlToPdfConverter();
evoPdfConverter.PdfDocumentOptions.PdfPageSize = PdfPageSize.A4;
byte[] pdfBytes = evoPdfConverter.ConvertUrl(url);

// Equivalent IronPDF pattern
var ironPdfRenderer = new ChromePdfRenderer
{
    RenderingOptions = new ChromePdfRenderOptions
    {
        PaperSize = PdfPaperSize.A4
    }
};
var pdf = ironPdfRenderer.RenderUrlAsPdf(url);
byte[] pdfBytes = pdf.BinaryData;

// Migration wrapper for gradual transition
public interface IPdfConverter
{
    byte[] ConvertHtmlToPdf(string html);
    byte[] ConvertUrlToPdf(string url);
}

public class IronPdfAdapter : IPdfConverter
{
    private readonly ChromePdfRenderer _renderer = new ChromePdfRenderer();

    public byte[] ConvertHtmlToPdf(string html)
    {
        return _renderer.RenderHtmlAsPdf(html).BinaryData;
    }

    public byte[] ConvertUrlToPdf(string url)
    {
        return _renderer.RenderUrlAsPdf(url).BinaryData;
    }
}

public class EvoPdfAdapter : IPdfConverter
{
    private readonly HtmlToPdfConverter _converter = new HtmlToPdfConverter();

    public byte[] ConvertHtmlToPdf(string html)
    {
        return _converter.ConvertHtml(html, "");
    }

    public byte[] ConvertUrlToPdf(string url)
    {
        return _converter.ConvertUrl(url);
    }
}

' EvoPdf pattern
Dim evoPdfConverter As New HtmlToPdfConverter()
evoPdfConverter.PdfDocumentOptions.PdfPageSize = PdfPageSize.A4
Dim pdfBytes() As Byte = evoPdfConverter.ConvertUrl(url)

' Equivalent IronPDF pattern
Dim ironPdfRenderer = New ChromePdfRenderer With {
	.RenderingOptions = New ChromePdfRenderOptions With {.PaperSize = PdfPaperSize.A4}
}
Dim pdf = ironPdfRenderer.RenderUrlAsPdf(url)
Dim pdfBytes() As Byte = pdf.BinaryData

' Migration wrapper for gradual transition
'INSTANT VB TODO TASK: Local functions are not converted by Instant VB:
'public interface IPdfConverter
'{
'	byte[] ConvertHtmlToPdf(string html);
'	byte[] ConvertUrlToPdf(string url);
'}

'INSTANT VB TODO TASK: Local functions are not converted by Instant VB:
'public class IronPdfAdapter : IPdfConverter
'{
'	private readonly ChromePdfRenderer _renderer = New ChromePdfRenderer();
'
'	public byte[] ConvertHtmlToPdf(string html)
'	{
'		Return _renderer.RenderHtmlAsPdf(html).BinaryData;
'	}
'
'	public byte[] ConvertUrlToPdf(string url)
'	{
'		Return _renderer.RenderUrlAsPdf(url).BinaryData;
'	}
'}

'INSTANT VB TODO TASK: Local functions are not converted by Instant VB:
'public class EvoPdfAdapter : IPdfConverter
'{
'	private readonly HtmlToPdfConverter _converter = New HtmlToPdfConverter();
'
'	public byte[] ConvertHtmlToPdf(string html)
'	{
'		Return _converter.ConvertHtml(html, "");
'	}
'
'	public byte[] ConvertUrlToPdf(string url)
'	{
'		Return _converter.ConvertUrl(url);
'	}
'}

$vbLabelText $csharpLabel

Conclusion: Making the Right Choice for Your Project

Both IronPDF and EvoPdf serve important roles in the .NET PDF library ecosystem, but they target different use cases and development philosophies.

Choose IronPDF when you need:

Modern web standard support (CSS3, JavaScript frameworks)
Comprehensive PDF manipulation beyond just generation
Enterprise security features and compliance tools
Cross-platform deployment flexibility
Extensive documentation and direct engineering support
Integration with other document processing tools

Choose EvoPdf when you need:

Simple HTML to PDF conversion at lower cost
Basic PDF generation for straightforward documents
Unlimited developer licenses for large teams
Faster processing of simple HTML content
Windows-centric deployment environment

The decision ultimately depends on your specific requirements, budget constraints, and long-term scalability needs. For most modern applications requiring robust PDF capabilities, IronPDF's comprehensive feature set and superior rendering engine justify the investment. However, EvoPdf remains a viable option for simpler use cases where cost is the primary concern.

Consider starting with the 30-day free trial of IronPDF to evaluate its capabilities in your specific use case. The trial includes all features without limitations, allowing you to make an informed decision based on actual performance in your environment.

Remember that the true cost of a PDF library extends beyond the license price—factor in development time, maintenance overhead, and the potential need for additional features as your application grows. Choose the library that not only meets your current needs but can scale with your future requirements.

Please note

EvoPdf is a registered trademark of its respective owner. This site is not affiliated with, endorsed by, or sponsored by EvoPdf. All product names, logos, and brands are property of their respective owners. Comparisons are for informational purposes only and reflect publicly available information at the time of writing.

Frequently Asked Questions

What are the key differences in HTML to PDF rendering between the two libraries?

IronPDF uses a full Chrome V8 rendering engine providing 98%+ browser fidelity with complete CSS3, HTML5, and JavaScript support. It handles modern frameworks like React and Angular seamlessly. EvoPdf uses a custom rendering engine with good support for standard HTML and CSS, achieving about 90% coverage of modern web standards. For complex JavaScript-heavy pages, IronPDF delivers more reliable results, while EvoPdf processes simple HTML documents 30-40% faster.

How do the libraries compare for PDF security and encryption?

Both libraries support AES-256 encryption, but IronPDF offers more comprehensive security features. IronPDF provides 15+ granular permission settings, visual digital signatures with custom images and timestamps, and integrated certificate management. EvoPdf offers 8 standard permissions and basic digital signature support. IronPDF's SecuritySettings class provides a unified API for all security configurations, while EvoPdf requires separate configuration steps.

Which library is better for cross-platform deployment?

IronPDF offers superior cross-platform support with native compatibility for Windows, Linux, macOS, and Docker containers without additional configuration. It includes all dependencies in the NuGet package, enabling zero-configuration deployment. EvoPdf supports multiple platforms but requires platform-specific setup, particularly when moving between Windows and Linux environments. For cloud deployments on Azure or AWS, IronPDF provides optimized configurations.

What are the performance differences for batch PDF processing?

For simple HTML documents, EvoPdf completes conversions in 0.8-1.2 seconds compared to IronPDF's 1.2-1.8 seconds. However, IronPDF excels in parallel processing with native async/await optimization and better memory management for large batches. When processing 1000+ page documents, IronPDF performs 30% faster. IronPDF also handles memory more efficiently with automatic garbage collection, while EvoPdf maintains a lower baseline memory footprint.

How do licensing costs compare for different team sizes?

EvoPdf offers lower entry costs with its Deployment License at $450 versus IronPDF's Lite License at $749. For teams, EvoPdf's Company License at $1,200 covers unlimited developers, while IronPDF's Professional License at $2,999 covers 10 developers. However, IronPDF includes features like DOCX to PDF conversion built-in, while EvoPdf requires additional purchases. The Iron Suite at $1,498 provides exceptional value with 9 products including IronOCR and IronBarcode.

Can both libraries handle PDF redaction for compliance requirements?

IronPDF includes comprehensive redaction capabilities with true content removal using the RedactTextOnAllPages() method. It supports regex patterns for SSNs and credit cards, selective page redaction, and OCR-based redaction for scanned documents. EvoPdf does not include built-in redaction functionality, which can be a significant limitation for applications requiring GDPR, HIPAA, or other privacy compliance.

What support and documentation options are available?

IronPDF provides 24/5 engineering support with direct access to developers, comprehensive API documentation, 100+ code examples, video tutorials, and migration guides. Response times typically range from 24-48 hours with priority support for Professional licenses. EvoPdf includes standard support for the first year with email and phone options, API documentation, and a support forum. IronPDF's extensive learning resources significantly reduce development time.

How do the libraries handle complex JavaScript and modern web features?

IronPDF's Chrome V8 engine fully executes JavaScript including frameworks like Chart.js, D3.js, and React components. It supports dynamic content rendering with configurable delays using RenderDelay. The library handles Google Fonts, CSS animations, and responsive designs. EvoPdf provides good JavaScript support but may struggle with complex frameworks or dynamic chart generation, making it better suited for static or server-rendered content.

Which library is better for converting DOCX files to PDF?

IronPDF includes built-in DOCX to PDF conversion through its DocxToPdfRenderer class at no additional cost. Simply use renderer.RenderDocxAsPdf() to convert Word documents while preserving formatting. EvoPdf requires purchasing the separate Evo Word to PDF converter tool, adding $450+ to the total cost. This makes IronPDF more cost-effective for applications needing multiple format conversions.

What are the best use cases for each library?

IronPDF excels in modern web applications, compliance-heavy industries (healthcare, finance), complex document processing, and cross-platform deployments. It's ideal for SaaS platforms, e-commerce sites generating dynamic invoices, and applications requiring digital signatures or redaction. EvoPdf suits simple HTML to PDF conversion, static report generation, budget-conscious teams with many developers, and Windows-centric deployments where advanced features aren't required.

Jacob Mellor

Chat with engineering team now

Chief Technology Officer

Jacob Mellor is Chief Technology Officer at Iron Software and a visionary engineer pioneering C# PDF technology. As the original developer behind Iron Software's core codebase, he has shaped the company's product architecture since its inception, transforming it alongside CEO Cameron Rimington into a 50+ person company serving NASA, Tesla, and global government agencies.

Jacob holds a First-Class Honours Bachelor of Engineering (BEng) in Civil Engineering from the University of Manchester (1998–2001). After opening his first software business in London in 1999 and creating his first .NET components in 2005, he specialized in solving complex problems across the Microsoft ecosystem.

His flagship IronPDF & IronSuite .NET libraries have achieved over 30 million NuGet installations globally, with his foundational code continuing to power developer tools used worldwide. With 25 years of commercial experience and 41 years of coding expertise, Jacob remains focused on driving innovation in enterprise-grade C#, Java, and Python PDF technologies while mentoring the next generation of technical leaders.

IronPDF vs SelectPdf: Complete .NET Core PDF Library Comparison for HTML to PDF Conversion

iTextSharp C# HTML to PDF Alternative for .NET Core

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IronPDF vs EvoPdf: Which .NET PDF Library Delivers Better Value in 2025?

How Do IronPDF and EvoPdf Compare at a Glance?

Understanding IronPDF and EvoPdf: Core Strengths and Philosophy

What Makes IronPDF Stand Out in the .NET PDF Library Market?

How Does EvoPdf Approach PDF Generation Differently?

How Do Cross-Platform Capabilities Compare Between Libraries?

IronPDF's Modern Cross-Platform Architecture

EvoPdf's Platform Requirements and Limitations

Which Library Offers Better PDF Functionality for Common Tasks?

HTML to PDF Conversion: Rendering Quality and Performance

IronPDF HTML to PDF Example

EvoPdf HTML to PDF Example

PDF Security and Encryption: Protecting Sensitive Documents

IronPDF Advanced Security Implementation

EvoPdf Security Configuration

Content Redaction: Compliance and Privacy Protection

IronPDF Redaction Example

Form Handling: Creating Interactive PDFs

IronPDF Forms Example

Performance Benchmarks: Real-World Scenarios

Batch Processing Performance Test

How Do Pricing Models Compare for Different Team Sizes?

IronPDF Licensing Structure

EvoPdf Licensing Options

Total Cost of Ownership Analysis

Scenario 1: Startup with 2 Developers

Scenario 2: Growing Team (5 Developers, Multiple Projects)

Scenario 3: Enterprise Needing Multiple PDF Tools

Scenario 4: SaaS Product with Redistribution

Which Documentation and Support Options Better Serve Developers?

IronPDF's Developer Resources

EvoPdf's Support Structure

What Are the Best Use Cases for Each Library?

When to Choose IronPDF

When to Choose EvoPdf

Advanced Implementation Patterns and Best Practices

Optimizing Performance in Production

IronPDF Performance Optimization

EvoPdf Performance Patterns

Error Handling and Debugging

IronPDF Error Handling

Industry-Specific Implementation Examples

Financial Services: Regulatory Compliance

E-Commerce: Dynamic Invoice Generation

Migration Strategies: Moving Between Libraries

Migrating from EvoPdf to IronPDF

Conclusion: Making the Right Choice for Your Project

Please note

Frequently Asked Questions

What are the key differences in HTML to PDF rendering between the two libraries?

How do the libraries compare for PDF security and encryption?

Which library is better for cross-platform deployment?

What are the performance differences for batch PDF processing?

How do licensing costs compare for different team sizes?

Can both libraries handle PDF redaction for compliance requirements?

What support and documentation options are available?

How do the libraries handle complex JavaScript and modern web features?

Which library is better for converting DOCX files to PDF?

What are the best use cases for each library?

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