A Comparison Between IronPDF & Apryse C#

What Key Features Does Apryse C# Provide?

• Easy Integration with .NET Projects: Smooth integration with .NET, including ASP.NET Core and traditional .NET Framework applications.
• Document Creation and Editing: Create PDFs from scratch or edit existing ones, including text, images, forms, and page manipulation—reordering, merging, or splitting.
• HTML to PDF Conversion: Direct conversion of HTML content to PDF format for invoices, reports, and web page documentation.
• Extensive Form Field Support: Reliable PDF form field creation, editing, and programmatic filling for automated workflows.
• Text and Content Extraction: Extract text and content from PDFs for analysis, search tools, and content management.
• Security and Encryption: Complete security including document encryption, permissions management, and digital signatures.
• Advanced PDF Features: Support for annotations, bookmarks, and hyperlinks for interactive PDFs.

What Key Features Does IronPDF Provide?

• Smooth .NET Integration: Easy integration supporting both .NET Framework and .NET Core, including ASP.NET projects.
• HTML to PDF Conversion: Convert HTML to PDF with high quality, ideal for reports, receipts, and documentation from HTML templates.
• Advanced PDF Editing: Extensive editing capabilities including adding text, images, and vector graphics.
• PDF Form Handling: Create, edit, and fill PDF forms programmatically for automated document workflows.
• Content Extraction: Extract text, images, and metadata for content analysis and data migration.
• Document Security: Password protection, encryption, and permission management.
• Performance and Scalability: Improve for speed and large-volume processing in high-demand applications.
• Complete Documentation: Extensive documentation and responsive support team for implementation assistance.
• PDF Standards Compatibility: Support for PDF/A, PDF/UA, and other industry specifications.

How Do I Launch Visual Studio?

Open Visual Studio on your computer. If you haven't installed Visual Studio yet, download and install it from the official Microsoft website, selecting an appropriate version for your needs.

How Do I Create a New Project?

Once Visual Studio opens, select "Create a new project" from the initial dashboard.

What Project Type Should I Choose?

In the "Create a new project" window, you'll see various project templates. Type "Console" in the search box or find "Console Application" from the list. Select the C#-specific template.

How Do I Configure My Project?

After selecting "Console Application," click "Next." Configure your new project:

• Project Name: Enter a descriptive name for your project.
• Location: Choose your preferred save location.
• Solution Name: Defaults to your project name but can be customized.

• Framework: Select your .NET version. The latest version is typically recommended unless specific requirements dictate otherwise.

How Do I Complete Project Creation?

After configuring your project settings, click "Create." Visual Studio sets up a new console application project with a default Program.cs file.

What Is the Project Structure?

Explore the generated project structure in the Solution Explorer pane. You'll primarily work with the Program.cs file for console applications, where you'll write your C# code.

How Do I Install Using NuGet Package Manager?

The NuGet Package Manager in Visual Studio provides a graphical interface for managing libraries.

1. Open your project in Visual Studio.
2. Right-click your project in Solution Explorer and select "Manage NuGet Packages."
3. Click the "Browse" tab and search for "IronPdf."
4. Select IronPDF from the results and click "Install."

How Do I Install Using Command Line?

The Package Manager Console offers direct command-line installation.

1. Open your Visual Studio project.
2. Go to Tools > NuGet Package Manager > Package Manager Console.
3. Enter the following command:

Install-Package IronPdf

This command installs the latest IronPDF version into your project.

How Do I Download Directly from NuGet?

You can manually download the package before integration.

1. Visit the NuGet website and search for "IronPdf."
2. On the IronPdf package page, click "Download Package" to get the .nupkg file.

3. Add the downloaded package manually through Solution Explorer > right-click project > "Add > Reference."

Each method successfully integrates IronPDF, allowing you to use its effective PDF processing features.

How Do I Install Apryse for .NET Framework?

1. Download the Apryse SDK for Windows: You'll need to visit the Apryse SDK for Windows page to download the SDK suitable for .NET Framework applications.

2. Extract the SDK: After downloading, extract the SDK to a known location on your system.
3. Obtain an Apryse Trial Key: Register on the Apryse platform to get a trial key, which you'll use to activate the SDK's trial features.
4. Set Up Your Project: In Visual Studio, create a new .NET Framework console application. Then, add the Lib folder from the extracted SDK to your project directory.
5. Add References: Right-click on References in your project, choose "Add Reference," and navigate to the Lib folder where you've copied PDFNetLoader.dll and the appropriate PDFNet.dll for your architecture (x86 or x64). Make sure to set PDFNet.dll's "Copy Local" property to false.
6. Configure App.config: Ensure that your App.config file has the loadFromRemoteSources setting enabled to true.

The SDK includes sample folders that you can open and run directly as solutions.## Advanced Features of IronPDF

HTML to PDF Conversion

using IronPdf;

// Secure the server environment to disable local disk access or cross-origin requests
Installation.EnableWebSecurity = true;

// Set your IronPDF license key
IronPdf.License.LicenseKey = "License-Key goes here";

// Instantiate a PDF renderer
var renderer = new ChromePdfRenderer();

// Define a simple HTML string to convert to PDF
string htmlContent = @"
<!DOCTYPE html>
<html lang='en'>
<head>
    <meta charset='UTF-8'>
    <meta name='viewport' content='width=device-width, initial-scale=1.0'>
    <title>My PDF</title>
    <style>
        body {
            font-family: Arial, sans-serif;
        }
        h1 {
            color: #333;
            text-align: center;
        }
        p {
            color: #666;
            text-align: justify;
        }
    </style>
</head>
<body>
    <h1>Welcome to My PDF</h1>
    <p>This is a sample paragraph demonstrating how to create a PDF from HTML using IronPdf in C#.</p>
    <p>You can add more content here as needed.</p>
</body>
</html>";

// Render the HTML string as a PDF
var pdf = renderer.RenderHtmlAsPdf(htmlContent);

// Save the resulting PDF to a file
pdf.SaveAs("output.pdf");

using IronPdf;

// Secure the server environment to disable local disk access or cross-origin requests
Installation.EnableWebSecurity = true;

// Set your IronPDF license key
IronPdf.License.LicenseKey = "License-Key goes here";

// Instantiate a PDF renderer
var renderer = new ChromePdfRenderer();

// Define a simple HTML string to convert to PDF
string htmlContent = @"
<!DOCTYPE html>
<html lang='en'>
<head>
    <meta charset='UTF-8'>
    <meta name='viewport' content='width=device-width, initial-scale=1.0'>
    <title>My PDF</title>
    <style>
        body {
            font-family: Arial, sans-serif;
        }
        h1 {
            color: #333;
            text-align: center;
        }
        p {
            color: #666;
            text-align: justify;
        }
    </style>
</head>
<body>
    <h1>Welcome to My PDF</h1>
    <p>This is a sample paragraph demonstrating how to create a PDF from HTML using IronPdf in C#.</p>
    <p>You can add more content here as needed.</p>
</body>
</html>";

// Render the HTML string as a PDF
var pdf = renderer.RenderHtmlAsPdf(htmlContent);

// Save the resulting PDF to a file
pdf.SaveAs("output.pdf");

using IronPdf;

// Set your IronPDF license key
IronPdf.License.LicenseKey = "License-Key goes here";

// Secure the server environment to disable local disk access or cross-origin requests
Installation.EnableWebSecurity = true;

// Instantiate a PDF renderer
var renderer = new ChromePdfRenderer();

// Render the HTML file as a PDF
var pdf = renderer.RenderHtmlFileAsPdf("invoice.html");

// Save the resulting PDF to a file
pdf.SaveAs("file.pdf");

using IronPdf;

// Set your IronPDF license key
IronPdf.License.LicenseKey = "License-Key goes here";

// Secure the server environment to disable local disk access or cross-origin requests
Installation.EnableWebSecurity = true;

// Instantiate a PDF renderer
var renderer = new ChromePdfRenderer();

// Render the HTML file as a PDF
var pdf = renderer.RenderHtmlFileAsPdf("invoice.html");

// Save the resulting PDF to a file
pdf.SaveAs("file.pdf");

using IronPdf;

// Set your IronPDF license key
IronPdf.License.LicenseKey = "License-Key goes here";

// Secure the server environment to disable local disk access or cross-origin requests
Installation.EnableWebSecurity = true;

// Instantiate a PDF renderer
var renderer = new ChromePdfRenderer();

// Render the URL as a PDF
var pdf = renderer.RenderUrlAsPdf("___PROTECTED_URL_100___");

// Save the resulting PDF to a file
pdf.SaveAs("url.pdf");

using IronPdf;

// Set your IronPDF license key
IronPdf.License.LicenseKey = "License-Key goes here";

// Secure the server environment to disable local disk access or cross-origin requests
Installation.EnableWebSecurity = true;

// Instantiate a PDF renderer
var renderer = new ChromePdfRenderer();

// Render the URL as a PDF
var pdf = renderer.RenderUrlAsPdf("___PROTECTED_URL_100___");

// Save the resulting PDF to a file
pdf.SaveAs("url.pdf");

Support for Bootstrap and Modern CSS Frameworks

IronPDF: Complete Bootstrap Support

• Bootstrap 5: Full support for flexbox layouts, CSS Grid, utility classes, and responsive components
• Bootstrap 4: Complete card systems, navigation components, and flex utilities
• Tailwind CSS: All utility classes render accurately
• Foundation: Complete grid system and component support
• Modern CSS3: Full flexbox, CSS Grid, custom properties, animations, and transitions

IronPDF renders the Bootstrap homepage and all official examples with pixel-perfect accuracy.

Code Example: Business Metrics Dashboard

using IronPdf;

// Set your IronPDF license key
IronPdf.License.LicenseKey = "License-Key goes here";

var renderer = new ChromePdfRenderer();
string bootstrapDashboard = @"
<!DOCTYPE html>
<html>
<head>
    <link href='___PROTECTED_URL_101___ rel='stylesheet'>
    <style>
        .metric-card { transition: transform 0.2s; }
        .metric-card:hover { transform: translateY(-5px); }
        .trend-up { color: #28a745; }
        .trend-down { color: #dc3545; }
    </style>
</head>
<body>
    <div class='container-fluid py-4'>
        <div class='d-flex justify-content-between align-items-center mb-4'>
            <h1 class='display-5'>Business Performance Dashboard</h1>
            <div class='text-muted'>Last updated: March 2025</div>
        </div>

        <div class='row g-4 mb-4'>
            <div class='col-md-3'>
                <div class='card metric-card shadow-sm border-start border-primary border-4'>
                    <div class='card-body'>
                        <div class='d-flex justify-content-between align-items-center mb-2'>
                            <h6 class='text-muted text-uppercase mb-0'>Total Revenue</h6>
                            <span class='badge bg-primary'>Q1 2025</span>
                        </div>
                        <h2 class='mb-1'>$2.4M</h2>
                        <div class='trend-up'>
                            <i>↑</i> <strong>+18.5%</strong> from last quarter
                        </div>
                    </div>
                </div>
            </div>

            <div class='col-md-3'>
                <div class='card metric-card shadow-sm border-start border-success border-4'>
                    <div class='card-body'>
                        <div class='d-flex justify-content-between align-items-center mb-2'>
                            <h6 class='text-muted text-uppercase mb-0'>New Customers</h6>
                            <span class='badge bg-success'>Active</span>
                        </div>
                        <h2 class='mb-1'>1,284</h2>
                        <div class='trend-up'>
                            <i>↑</i> <strong>+24.3%</strong> growth rate
                        </div>
                    </div>
                </div>
            </div>

            <div class='col-md-3'>
                <div class='card metric-card shadow-sm border-start border-warning border-4'>
                    <div class='card-body'>
                        <div class='d-flex justify-content-between align-items-center mb-2'>
                            <h6 class='text-muted text-uppercase mb-0'>Avg Order Value</h6>
                            <span class='badge bg-warning text-dark'>Updated</span>
                        </div>
                        <h2 class='mb-1'>$1,847</h2>
                        <div class='trend-up'>
                            <i>↑</i> <strong>+5.2%</strong> increase
                        </div>
                    </div>
                </div>
            </div>

            <div class='col-md-3'>
                <div class='card metric-card shadow-sm border-start border-info border-4'>
                    <div class='card-body'>
                        <div class='d-flex justify-content-between align-items-center mb-2'>
                            <h6 class='text-muted text-uppercase mb-0'>Satisfaction Rate</h6>
                            <span class='badge bg-info'>Excellent</span>
                        </div>
                        <h2 class='mb-1'>94.7%</h2>
                        <div class='trend-up'>
                            <i>↑</i> <strong>+2.1pts</strong> improvement
                        </div>
                    </div>
                </div>
            </div>
        </div>

        <div class='row g-4'>
            <div class='col-md-8'>
                <div class='card shadow-sm'>
                    <div class='card-header bg-white d-flex justify-content-between align-items-center'>
                        <h5 class='mb-0'>Revenue Breakdown by Category</h5>
                        <div class='btn-group btn-group-sm' role='group'>
                            <button type='button' class='btn btn-outline-primary active'>Monthly</button>
                            <button type='button' class='btn btn-outline-primary'>Quarterly</button>
                            <button type='button' class='btn btn-outline-primary'>Annual</button>
                        </div>
                    </div>
                    <div class='card-body'>
                        <div class='table-responsive'>
                            <table class='table table-hover mb-0'>
                                <thead class='table-light'>
                                    <tr>
                                        <th>Category</th>
                                        <th>Revenue</th>
                                        <th>Orders</th>
                                        <th>Avg Value</th>
                                        <th class='text-end'>Trend</th>
                                    </tr>
                                </thead>
                                <tbody>
                                    <tr>
                                        <td><span class='badge bg-primary me-2'>A</span>Enterprise Solutions</td>
                                        <td><strong>$1,245,000</strong></td>
                                        <td>142</td>
                                        <td>$8,768</td>
                                        <td class='text-end'><span class='badge bg-success'>+12%</span></td>
                                    </tr>
                                    <tr>
                                        <td><span class='badge bg-success me-2'>B</span>Professional Services</td>
                                        <td><strong>$687,500</strong></td>
                                        <td>458</td>
                                        <td>$1,501</td>
                                        <td class='text-end'><span class='badge bg-success'>+18%</span></td>
                                    </tr>
                                    <tr>
                                        <td><span class='badge bg-info me-2'>C</span>Standard Packages</td>
                                        <td><strong>$412,300</strong></td>
                                        <td>891</td>
                                        <td>$463</td>
                                        <td class='text-end'><span class='badge bg-success'>+8%</span></td>
                                    </tr>
                                    <tr>
                                        <td><span class='badge bg-warning me-2'>D</span>Custom Development</td>
                                        <td><strong>$55,200</strong></td>
                                        <td>12</td>
                                        <td>$4,600</td>
                                        <td class='text-end'><span class='badge bg-danger'>-3%</span></td>
                                    </tr>
                                </tbody>
                            </table>
                        </div>
                    </div>
                </div>
            </div>

            <div class='col-md-4'>
                <div class='card shadow-sm'>
                    <div class='card-header bg-white'>
                        <h5 class='mb-0'>Quick Actions</h5>
                    </div>
                    <div class='card-body'>
                        <div class='d-grid gap-2'>
                            <button class='btn btn-primary'>Generate Full Report</button>
                            <button class='btn btn-outline-primary'>Export to Excel</button>
                            <button class='btn btn-outline-secondary'>Schedule Email</button>
                            <button class='btn btn-outline-info'>Share Dashboard</button>
                        </div>
                    </div>
                </div>

                <div class='card shadow-sm mt-3'>
                    <div class='card-header bg-white'>
                        <h5 class='mb-0'>Key Insights</h5>
                    </div>
                    <div class='card-body'>
                        <div class='alert alert-success mb-2'>
                            <small><strong>Top Performer:</strong> Enterprise Solutions leading revenue growth</small>
                        </div>
                        <div class='alert alert-info mb-2'>
                            <small><strong>Growth Driver:</strong> Professional Services showing strongest customer acquisition</small>
                        </div>
                        <div class='alert alert-warning mb-0'>
                            <small><strong>Attention Needed:</strong> Custom Development segment requires review</small>
                        </div>
                    </div>
                </div>
            </div>
        </div>
    </div>
</body>
</html>";

var pdf = renderer.RenderHtmlAsPdf(bootstrapDashboard);
pdf.SaveAs("business-dashboard.pdf");

using IronPdf;

// Set your IronPDF license key
IronPdf.License.LicenseKey = "License-Key goes here";

var renderer = new ChromePdfRenderer();
string bootstrapDashboard = @"
<!DOCTYPE html>
<html>
<head>
    <link href='___PROTECTED_URL_101___ rel='stylesheet'>
    <style>
        .metric-card { transition: transform 0.2s; }
        .metric-card:hover { transform: translateY(-5px); }
        .trend-up { color: #28a745; }
        .trend-down { color: #dc3545; }
    </style>
</head>
<body>
    <div class='container-fluid py-4'>
        <div class='d-flex justify-content-between align-items-center mb-4'>
            <h1 class='display-5'>Business Performance Dashboard</h1>
            <div class='text-muted'>Last updated: March 2025</div>
        </div>

        <div class='row g-4 mb-4'>
            <div class='col-md-3'>
                <div class='card metric-card shadow-sm border-start border-primary border-4'>
                    <div class='card-body'>
                        <div class='d-flex justify-content-between align-items-center mb-2'>
                            <h6 class='text-muted text-uppercase mb-0'>Total Revenue</h6>
                            <span class='badge bg-primary'>Q1 2025</span>
                        </div>
                        <h2 class='mb-1'>$2.4M</h2>
                        <div class='trend-up'>
                            <i>↑</i> <strong>+18.5%</strong> from last quarter
                        </div>
                    </div>
                </div>
            </div>

            <div class='col-md-3'>
                <div class='card metric-card shadow-sm border-start border-success border-4'>
                    <div class='card-body'>
                        <div class='d-flex justify-content-between align-items-center mb-2'>
                            <h6 class='text-muted text-uppercase mb-0'>New Customers</h6>
                            <span class='badge bg-success'>Active</span>
                        </div>
                        <h2 class='mb-1'>1,284</h2>
                        <div class='trend-up'>
                            <i>↑</i> <strong>+24.3%</strong> growth rate
                        </div>
                    </div>
                </div>
            </div>

            <div class='col-md-3'>
                <div class='card metric-card shadow-sm border-start border-warning border-4'>
                    <div class='card-body'>
                        <div class='d-flex justify-content-between align-items-center mb-2'>
                            <h6 class='text-muted text-uppercase mb-0'>Avg Order Value</h6>
                            <span class='badge bg-warning text-dark'>Updated</span>
                        </div>
                        <h2 class='mb-1'>$1,847</h2>
                        <div class='trend-up'>
                            <i>↑</i> <strong>+5.2%</strong> increase
                        </div>
                    </div>
                </div>
            </div>

            <div class='col-md-3'>
                <div class='card metric-card shadow-sm border-start border-info border-4'>
                    <div class='card-body'>
                        <div class='d-flex justify-content-between align-items-center mb-2'>
                            <h6 class='text-muted text-uppercase mb-0'>Satisfaction Rate</h6>
                            <span class='badge bg-info'>Excellent</span>
                        </div>
                        <h2 class='mb-1'>94.7%</h2>
                        <div class='trend-up'>
                            <i>↑</i> <strong>+2.1pts</strong> improvement
                        </div>
                    </div>
                </div>
            </div>
        </div>

        <div class='row g-4'>
            <div class='col-md-8'>
                <div class='card shadow-sm'>
                    <div class='card-header bg-white d-flex justify-content-between align-items-center'>
                        <h5 class='mb-0'>Revenue Breakdown by Category</h5>
                        <div class='btn-group btn-group-sm' role='group'>
                            <button type='button' class='btn btn-outline-primary active'>Monthly</button>
                            <button type='button' class='btn btn-outline-primary'>Quarterly</button>
                            <button type='button' class='btn btn-outline-primary'>Annual</button>
                        </div>
                    </div>
                    <div class='card-body'>
                        <div class='table-responsive'>
                            <table class='table table-hover mb-0'>
                                <thead class='table-light'>
                                    <tr>
                                        <th>Category</th>
                                        <th>Revenue</th>
                                        <th>Orders</th>
                                        <th>Avg Value</th>
                                        <th class='text-end'>Trend</th>
                                    </tr>
                                </thead>
                                <tbody>
                                    <tr>
                                        <td><span class='badge bg-primary me-2'>A</span>Enterprise Solutions</td>
                                        <td><strong>$1,245,000</strong></td>
                                        <td>142</td>
                                        <td>$8,768</td>
                                        <td class='text-end'><span class='badge bg-success'>+12%</span></td>
                                    </tr>
                                    <tr>
                                        <td><span class='badge bg-success me-2'>B</span>Professional Services</td>
                                        <td><strong>$687,500</strong></td>
                                        <td>458</td>
                                        <td>$1,501</td>
                                        <td class='text-end'><span class='badge bg-success'>+18%</span></td>
                                    </tr>
                                    <tr>
                                        <td><span class='badge bg-info me-2'>C</span>Standard Packages</td>
                                        <td><strong>$412,300</strong></td>
                                        <td>891</td>
                                        <td>$463</td>
                                        <td class='text-end'><span class='badge bg-success'>+8%</span></td>
                                    </tr>
                                    <tr>
                                        <td><span class='badge bg-warning me-2'>D</span>Custom Development</td>
                                        <td><strong>$55,200</strong></td>
                                        <td>12</td>
                                        <td>$4,600</td>
                                        <td class='text-end'><span class='badge bg-danger'>-3%</span></td>
                                    </tr>
                                </tbody>
                            </table>
                        </div>
                    </div>
                </div>
            </div>

            <div class='col-md-4'>
                <div class='card shadow-sm'>
                    <div class='card-header bg-white'>
                        <h5 class='mb-0'>Quick Actions</h5>
                    </div>
                    <div class='card-body'>
                        <div class='d-grid gap-2'>
                            <button class='btn btn-primary'>Generate Full Report</button>
                            <button class='btn btn-outline-primary'>Export to Excel</button>
                            <button class='btn btn-outline-secondary'>Schedule Email</button>
                            <button class='btn btn-outline-info'>Share Dashboard</button>
                        </div>
                    </div>
                </div>

                <div class='card shadow-sm mt-3'>
                    <div class='card-header bg-white'>
                        <h5 class='mb-0'>Key Insights</h5>
                    </div>
                    <div class='card-body'>
                        <div class='alert alert-success mb-2'>
                            <small><strong>Top Performer:</strong> Enterprise Solutions leading revenue growth</small>
                        </div>
                        <div class='alert alert-info mb-2'>
                            <small><strong>Growth Driver:</strong> Professional Services showing strongest customer acquisition</small>
                        </div>
                        <div class='alert alert-warning mb-0'>
                            <small><strong>Attention Needed:</strong> Custom Development segment requires review</small>
                        </div>
                    </div>
                </div>
            </div>
        </div>
    </div>
</body>
</html>";

var pdf = renderer.RenderHtmlAsPdf(bootstrapDashboard);
pdf.SaveAs("business-dashboard.pdf");

Output: Professional business dashboard PDF with Bootstrap 5's flexbox-based grid system, card components with border utilities, badge elements, responsive tables, and color-coded metrics—all rendering with perfect layout preservation and typography.

Apryse's CSS Framework Limitations

Apryse's HTML2PDF module uses a custom rendering engine (not Chromium) with documented limitations:

• Partial flexbox support: Bootstrap 4/5 layouts may not render correctly
• Limited CSS Grid: Modern grid-based designs often fail
• JavaScript constraints: Minimal execution compared to browser environments
• Framework compatibility: Requires extensive testing for Bootstrap components

The HTML2PDF documentation explicitly warns that complex CSS may not render as expected. Developers report issues with navigation bars, flex-based card layouts, and responsive utilities.

Development impact: Teams using Apryse must create parallel "PDF-safe" CSS or significantly simplify Bootstrap layouts, adding development overhead and limiting design consistency between web and PDF outputs.

For complete Bootstrap framework support with full CSS3 rendering, see the Bootstrap & Flexbox CSS Guide.

Merging and Splitting PDFs

IronPDF makes combining multiple PDF documents or dividing PDFs into smaller files straightforward. This functionality is essential for document management systems requiring organized PDF content structure.

using IronPdf;

// Set your IronPDF license key
IronPdf.License.LicenseKey = "License-Key goes here";

// Secure the server environment to disable local disk access or cross-origin requests
Installation.EnableWebSecurity = true;

// Define HTML content for two PDFs to merge
var htmlA = @"
    <h1>PDF A</h1>
    <p>This is the content of PDF A.</p>
    <p>This is the first page of PDF A.</p>
    <div style='page-break-after: always;'></div>
    <p>This is the second page of PDF A.</p>";

var htmlB = @"
    <h1>PDF B</h1>
    <p>This is the content of PDF B.</p>
    <p>This is the first page of PDF B.</p>
    <div style='page-break-after: always;'></div>
    <p>This is the second page of PDF B.</p>";

// Instantiate a PDF renderer
var renderer = new ChromePdfRenderer();

// Render the HTML content as separate PDF documents
var pdfDocA = renderer.RenderHtmlAsPdf(htmlA);
var pdfDocB = renderer.RenderHtmlAsPdf(htmlB);

// Merge the two PDFs into one
var mergedPdf = PdfDocument.Merge(pdfDocA, pdfDocB);

// Save the merged PDF to a file
mergedPdf.SaveAs("Merged.pdf");

using IronPdf;

// Set your IronPDF license key
IronPdf.License.LicenseKey = "License-Key goes here";

// Secure the server environment to disable local disk access or cross-origin requests
Installation.EnableWebSecurity = true;

// Define HTML content for two PDFs to merge
var htmlA = @"
    <h1>PDF A</h1>
    <p>This is the content of PDF A.</p>
    <p>This is the first page of PDF A.</p>
    <div style='page-break-after: always;'></div>
    <p>This is the second page of PDF A.</p>";

var htmlB = @"
    <h1>PDF B</h1>
    <p>This is the content of PDF B.</p>
    <p>This is the first page of PDF B.</p>
    <div style='page-break-after: always;'></div>
    <p>This is the second page of PDF B.</p>";

// Instantiate a PDF renderer
var renderer = new ChromePdfRenderer();

// Render the HTML content as separate PDF documents
var pdfDocA = renderer.RenderHtmlAsPdf(htmlA);
var pdfDocB = renderer.RenderHtmlAsPdf(htmlB);

// Merge the two PDFs into one
var mergedPdf = PdfDocument.Merge(pdfDocA, pdfDocB);

// Save the merged PDF to a file
mergedPdf.SaveAs("Merged.pdf");

Adding Watermarks to PDFs

IronPDF enables you to add watermarks to PDF pages for branding or marking documents as confidential. The library manages the complexity of both text and image watermarks, providing flexibility in application and display.

using IronPdf;

// Set your IronPDF license key
IronPdf.License.LicenseKey = "License-Key goes here";

// Secure the server environment to disable local disk access or cross-origin requests
Installation.EnableWebSecurity = true;

// Instantiate a PDF renderer
var renderer = new ChromePdfRenderer();

// Render a URL as a PDF
var pdf = renderer.RenderUrlAsPdf("___PROTECTED_URL_102___");

// Apply a watermark to the PDF
pdf.ApplyWatermark("<h2 style='color:red'>SAMPLE</h2>", 30, IronPdf.Editing.VerticalAlignment.Middle, IronPdf.Editing.HorizontalAlignment.Center);

// Save the watermarked PDF to a file
pdf.SaveAs("Watermarked.pdf");
```### How Do I Work with PDF Forms?

IronPDF supports complete [interactive PDF form handling](https://ironpdf.com/how-to/create-forms/). You can create, fill, and submit PDF forms programmatically, which is particularly useful for automating form processing or integrating form data collection into your workflows.

```csharp
using IronPdf;

// Set your IronPDF license key
IronPdf.License.LicenseKey = "License-Key goes here";

// Secure the server environment to disable local disk access or cross-origin requests
Installation.EnableWebSecurity = true;

// Define HTML content with form elements
const string formHtml = @"
    <html>
        <body>
            <h2>Employee Information Form</h2>
            <form>
                First name: <br> 
                Last name: <br> 
                <br>
                <p>Please select your department:</p>
                <select name='department'>
                    <option value='HR'>HR</option>
                    <option value='Finance'>Finance</option>
                    <option value='IT'>IT</option>
                    <option value='Marketing'>Marketing</option>
                </select>
                <br>
                <br>
                <p>Please select your employment status:</p>
                <label for='fulltime'>Full-time</label> <br>
                <label for='parttime'>Part-time</label> <br>
                <br>
                <p>Please select your skills:</p>
                <label for='skill1'> Programming</label><br>
                <label for='skill2'> Design</label><br>
                <label for='skill3'> Marketing</label><br>
            </form>
        </body>
    </html>";

// Instantiate a PDF renderer
var renderer = new ChromePdfRenderer();
renderer.RenderingOptions.CreatePdfFormsFromHtml = true;

// Render the HTML form content as a PDF
renderer.RenderHtmlAsPdf(formHtml).SaveAs("EmployeeInfoForm.pdf");

using IronPdf;

// Set your IronPDF license key
IronPdf.License.LicenseKey = "License-Key goes here";

// Secure the server environment to disable local disk access or cross-origin requests
Installation.EnableWebSecurity = true;

// Instantiate a PDF renderer
var renderer = new ChromePdfRenderer();

// Render a URL as a PDF
var pdf = renderer.RenderUrlAsPdf("___PROTECTED_URL_102___");

// Apply a watermark to the PDF
pdf.ApplyWatermark("<h2 style='color:red'>SAMPLE</h2>", 30, IronPdf.Editing.VerticalAlignment.Middle, IronPdf.Editing.HorizontalAlignment.Center);

// Save the watermarked PDF to a file
pdf.SaveAs("Watermarked.pdf");
```### How Do I Work with PDF Forms?

IronPDF supports complete [interactive PDF form handling](https://ironpdf.com/how-to/create-forms/). You can create, fill, and submit PDF forms programmatically, which is particularly useful for automating form processing or integrating form data collection into your workflows.

```csharp
using IronPdf;

// Set your IronPDF license key
IronPdf.License.LicenseKey = "License-Key goes here";

// Secure the server environment to disable local disk access or cross-origin requests
Installation.EnableWebSecurity = true;

// Define HTML content with form elements
const string formHtml = @"
    <html>
        <body>
            <h2>Employee Information Form</h2>
            <form>
                First name: <br> 
                Last name: <br> 
                <br>
                <p>Please select your department:</p>
                <select name='department'>
                    <option value='HR'>HR</option>
                    <option value='Finance'>Finance</option>
                    <option value='IT'>IT</option>
                    <option value='Marketing'>Marketing</option>
                </select>
                <br>
                <br>
                <p>Please select your employment status:</p>
                <label for='fulltime'>Full-time</label> <br>
                <label for='parttime'>Part-time</label> <br>
                <br>
                <p>Please select your skills:</p>
                <label for='skill1'> Programming</label><br>
                <label for='skill2'> Design</label><br>
                <label for='skill3'> Marketing</label><br>
            </form>
        </body>
    </html>";

// Instantiate a PDF renderer
var renderer = new ChromePdfRenderer();
renderer.RenderingOptions.CreatePdfFormsFromHtml = true;

// Render the HTML form content as a PDF
renderer.RenderHtmlAsPdf(formHtml).SaveAs("EmployeeInfoForm.pdf");

How Do I Secure and Encrypt PDFs?

IronPDF provides reliable features to secure PDF documents, including encryption, permission settings, and digital signatures. These ensure sensitive information protection and document integrity maintenance.

using IronPdf;

// Set your IronPDF license key
IronPdf.License.LicenseKey = "License-Key goes here";

// Secure the server environment to disable local disk access or cross-origin requests
Installation.EnableWebSecurity = true;

// Load an existing PDF file
var pdf = PdfDocument.FromFile("invoice.pdf");

// Set document security settings
pdf.SecuritySettings.OwnerPassword = "top-secret"; // Password to edit the PDF
pdf.SecuritySettings.UserPassword = "sharable";   // Password to open the PDF

// Save the secured PDF to a file
pdf.SaveAs("secured.pdf");

using IronPdf;

// Set your IronPDF license key
IronPdf.License.LicenseKey = "License-Key goes here";

// Secure the server environment to disable local disk access or cross-origin requests
Installation.EnableWebSecurity = true;

// Load an existing PDF file
var pdf = PdfDocument.FromFile("invoice.pdf");

// Set document security settings
pdf.SecuritySettings.OwnerPassword = "top-secret"; // Password to edit the PDF
pdf.SecuritySettings.UserPassword = "sharable";   // Password to open the PDF

// Save the secured PDF to a file
pdf.SaveAs("secured.pdf");

What Advanced Editing Options Are Available?

IronPDF offers advanced editing capabilities beyond basic modifications. These include adding headers and footers, customizing page layout, and embedding images and fonts. These features enable dynamic PDF generation and customization for specific application requirements.

using IronPdf;

// Set your IronPDF license key
IronPdf.License.LicenseKey = "License-Key goes here";

// Secure the server environment to disable local disk access or cross-origin requests
Installation.EnableWebSecurity = true;

// Instantiate a PDF renderer
var renderer = new IronPdf.ChromePdfRenderer();

// Define multi-page HTML content with page breaks
var multiPageHtml = @"
    <p> This is 1st Page</p>
    <div style = 'page-break-after: always;' ></div>
    <p> This is 2nd Page</p>
    <div style = 'page-break-after: always;' ></div>
    <p> This is 3rd Page</p>
    <div style = 'page-break-after: always;' ></div>
    <p> This is 4th Page</p>
    <div style = 'page-break-after: always;' ></div>
    <p> This is 5th Page</p>
    <div style = 'page-break-after: always;' ></div>
    <p> This is 6th Page</p>
    <div style = 'page-break-after: always;' ></div>
    <p> This is 7th Page</p>";

// Render the HTML content as a PDF
var pdfDoc = renderer.RenderHtmlAsPdf(multiPageHtml);

// Create a header for the first page only
var firstPageHeader = new HtmlHeaderFooter();
firstPageHeader.HtmlFragment = "This is the First Page Header";
pdfDoc.AddHtmlHeaders(firstPageHeader, 1);

// Save the resulting PDF with headers to a file
pdfDoc.SaveAs("PagesWithHeaders.pdf");

using IronPdf;

// Set your IronPDF license key
IronPdf.License.LicenseKey = "License-Key goes here";

// Secure the server environment to disable local disk access or cross-origin requests
Installation.EnableWebSecurity = true;

// Instantiate a PDF renderer
var renderer = new IronPdf.ChromePdfRenderer();

// Define multi-page HTML content with page breaks
var multiPageHtml = @"
    <p> This is 1st Page</p>
    <div style = 'page-break-after: always;' ></div>
    <p> This is 2nd Page</p>
    <div style = 'page-break-after: always;' ></div>
    <p> This is 3rd Page</p>
    <div style = 'page-break-after: always;' ></div>
    <p> This is 4th Page</p>
    <div style = 'page-break-after: always;' ></div>
    <p> This is 5th Page</p>
    <div style = 'page-break-after: always;' ></div>
    <p> This is 6th Page</p>
    <div style = 'page-break-after: always;' ></div>
    <p> This is 7th Page</p>";

// Render the HTML content as a PDF
var pdfDoc = renderer.RenderHtmlAsPdf(multiPageHtml);

// Create a header for the first page only
var firstPageHeader = new HtmlHeaderFooter();
firstPageHeader.HtmlFragment = "This is the First Page Header";
pdfDoc.AddHtmlHeaders(firstPageHeader, 1);

// Save the resulting PDF with headers to a file
pdfDoc.SaveAs("PagesWithHeaders.pdf");

How Do I Add Annotations and Markup?

Apryse C# enables you to add annotations and markup to PDF documents programmatically. This includes text annotations, highlights, underlines, and shapes—essential for document review processes or adding supplementary information.

using pdftron;
using pdftron.PDF;
using pdftron.SDF;

class Program
{
    static void Main()
    {
        // Initialize the PDFNet library with your license key
        PDFNet.Initialize("License");

        // Open an existing PDF document
        using (PDFDoc doc = new PDFDoc("input.pdf"))
        {
            // Access the first page of the document
            Page page = doc.GetPage(1);

            // Create a text annotation on the document
            Text txt = Text.Create(doc, new Rect(10, 20, 30, 40));
            txt.SetIcon("UserIcon");
            txt.SetContents("It's an annotation!");
            page.AnnotPushBack(txt);

            // Save the modified document
            doc.Save("output.pdf", SDFDoc.SaveOptions.e_linearized);
        }
    }
}

using pdftron;
using pdftron.PDF;
using pdftron.SDF;

class Program
{
    static void Main()
    {
        // Initialize the PDFNet library with your license key
        PDFNet.Initialize("License");

        // Open an existing PDF document
        using (PDFDoc doc = new PDFDoc("input.pdf"))
        {
            // Access the first page of the document
            Page page = doc.GetPage(1);

            // Create a text annotation on the document
            Text txt = Text.Create(doc, new Rect(10, 20, 30, 40));
            txt.SetIcon("UserIcon");
            txt.SetContents("It's an annotation!");
            page.AnnotPushBack(txt);

            // Save the modified document
            doc.Save("output.pdf", SDFDoc.SaveOptions.e_linearized);
        }
    }
}

How Do I Convert Documents to PDF?

Apryse C# enables conversion of various document formats to PDF, including Office documents, images, and HTML. This feature ensures uniform document formats for archiving, sharing, or displaying.

using pdftron;
using pdftron.PDF;

class Program
{
    static void Main()
    {
        // Initialize the PDFNet library
        PDFNet.Initialize();

        // Create a new PDF document
        PDFDoc pdfdoc = new PDFDoc();

        // Convert a Word document to PDF and add it to the PDF document
        Convert.ToPdf(pdfdoc, "input.docx");

        // Save the newly created PDF document
        pdfdoc.Save("output.pdf", SDFDoc.SaveOptions.e_linearized);
    }
}

using pdftron;
using pdftron.PDF;

class Program
{
    static void Main()
    {
        // Initialize the PDFNet library
        PDFNet.Initialize();

        // Create a new PDF document
        PDFDoc pdfdoc = new PDFDoc();

        // Convert a Word document to PDF and add it to the PDF document
        Convert.ToPdf(pdfdoc, "input.docx");

        // Save the newly created PDF document
        pdfdoc.Save("output.pdf", SDFDoc.SaveOptions.e_linearized);
    }
}

How Do I Extract Content from PDFs?

Apryse C# excels at extracting text, images, and other content from PDF documents. This capability supports content analysis, data extraction, and information retrieval applications, enabling efficient PDF content processing.

using pdftron;
using pdftron.PDF;
using pdftron.SDF;

class Program
{
    static void Main()
    {
        // Initialize the PDFNet library
        PDFNet.Initialize();

        // Open an existing PDF document
        using (PDFDoc doc = new PDFDoc("input.pdf"))
        {
            // Iterate through each page of the document
            PageIterator itr = doc.GetPageIterator();
            for (; itr.HasNext(); itr.Next())
            {
                Page page = itr.Current();

                // Extract text from the page
                TextExtractor txt = new TextExtractor();
                txt.Begin(page);

                // Print the extracted text to the console
                Console.WriteLine(txt.GetAsText());
            }
        }
    }
}

using pdftron;
using pdftron.PDF;
using pdftron.SDF;

class Program
{
    static void Main()
    {
        // Initialize the PDFNet library
        PDFNet.Initialize();

        // Open an existing PDF document
        using (PDFDoc doc = new PDFDoc("input.pdf"))
        {
            // Iterate through each page of the document
            PageIterator itr = doc.GetPageIterator();
            for (; itr.HasNext(); itr.Next())
            {
                Page page = itr.Current();

                // Extract text from the page
                TextExtractor txt = new TextExtractor();
                txt.Begin(page);

                // Print the extracted text to the console
                Console.WriteLine(txt.GetAsText());
            }
        }
    }
}

How Do I Secure PDFs with Apryse?

Apryse C# provides complete tools for securing PDF documents. You can apply password protection, encrypt documents, and manage user permissions to safeguard sensitive information.

using pdftron;
using pdftron.SDF;
using pdftron.PDF;

class Program
{
    static void Main()
    {
        // Initialize the PDFNet library
        PDFNet.Initialize();

        // Open an existing PDF document
        using (PDFDoc doc = new PDFDoc("input.pdf"))
        {
            // Initialize the security handler
            doc.InitSecurityHandler();

            // Create a new security handler
            SecurityHandler newHandler = new SecurityHandler();

            // Set the user password for the document
            newHandler.ChangeUserPassword("new_password");

            // Grant permission to print the document
            newHandler.SetPermission(SecurityHandler.Permission.e_print, true);

            // Apply the security handler to the document
            doc.SetSecurityHandler(newHandler);

            // Save the secured document
            doc.Save("output.pdf", SDFDoc.SaveOptions.e_linearized);
        }
    }
}

using pdftron;
using pdftron.SDF;
using pdftron.PDF;

class Program
{
    static void Main()
    {
        // Initialize the PDFNet library
        PDFNet.Initialize();

        // Open an existing PDF document
        using (PDFDoc doc = new PDFDoc("input.pdf"))
        {
            // Initialize the security handler
            doc.InitSecurityHandler();

            // Create a new security handler
            SecurityHandler newHandler = new SecurityHandler();

            // Set the user password for the document
            newHandler.ChangeUserPassword("new_password");

            // Grant permission to print the document
            newHandler.SetPermission(SecurityHandler.Permission.e_print, true);

            // Apply the security handler to the document
            doc.SetSecurityHandler(newHandler);

            // Save the secured document
            doc.Save("output.pdf", SDFDoc.SaveOptions.e_linearized);
        }
    }
}

How Do I Redact Sensitive Information?

Apryse C# supports redacting sensitive information from PDF documents—essential for compliance and privacy concerns. This feature allows permanent removal or obscuring of text and images within PDFs.

using pdftron;
using pdftron.PDF;
using pdftron.SDF;

class Program
{
    static void Main()
    {
        // Initialize the PDFNet library
        PDFNet.Initialize();

        // Open an existing PDF document
        using (PDFDoc doc = new PDFDoc("input.pdf"))
        {
            // Define redaction areas on specific pages
            Redactor.Redaction[] redactions = {
                new Redactor.Redaction(1, new Rect(100, 100, 200, 200), false, "redacted"),
            };

            // Apply redactions to the document
            Redactor.Redact(doc, redactions);

            // Save the redacted document
            doc.Save("output.pdf", SDFDoc.SaveOptions.e_linearized);
        }
    }
}

using pdftron;
using pdftron.PDF;
using pdftron.SDF;

class Program
{
    static void Main()
    {
        // Initialize the PDFNet library
        PDFNet.Initialize();

        // Open an existing PDF document
        using (PDFDoc doc = new PDFDoc("input.pdf"))
        {
            // Define redaction areas on specific pages
            Redactor.Redaction[] redactions = {
                new Redactor.Redaction(1, new Rect(100, 100, 200, 200), false, "redacted"),
            };

            // Apply redactions to the document
            Redactor.Redact(doc, redactions);

            // Save the redacted document
            doc.Save("output.pdf", SDFDoc.SaveOptions.e_linearized);
        }
    }
}

What Support Does IronPDF Provide?

Documentation: IronPDF offers complete documentation covering topics from getting started guides to advanced features like HTML to PDF conversion, PDF editing, merging, splitting, and security. The documentation provides easy-to-follow content with extensive code examples and explanations guiding you through implementing various PDF functionalities.

Support: IronPDF provides assistance through multiple channels, including email support, ticket support, and live engineering support chat where you can connect with their technical team for specific issues. Your application can immediately benefit from their feedback system.

What Support Does Apryse C# Provide?

Documentation: Apryse C# (formerly PDFTron for .NET) provides detailed documentation including a complete API reference, developer guides, and sample code for diverse PDF manipulation tasks.

Support: Apryse offers developer support through direct email communication with their technical team for troubleshooting and implementation questions. You can also ask questions on Stack Overflow.

What Are IronPDF's License Options?

IronPDF offers several licensing options tailored to different project needs. Pricing starts at $799 for a Lite license. These licenses vary based on developer count, locations, and projects covered. IronPDF also provides royalty-free redistribution options and extended support with specific pricing for add-ons.

IronPDF's perpetual license options include:

• Lite Edition: Costs $799, suitable for 1 developer, 1 location, and 1 project, with email support included.
• Plus Edition: Priced at $1,199, it covers up to 3 developers, 3 locations, and 3 projects, with 24-hour email and chat support, and phone support.
• Professional Edition: At $2,399, this edition is for up to 10 developers, 10 locations, and 10 projects, providing comprehensive support including email, chat, phone, and screen-sharing support.

They also offer a monthly subscription at $500 including 10,000 API calls, with additional calls at $0.02 each. For unlimited use, IronPDF provides an enterprise solution with quote-based pricing. This solution includes unlimited perpetual licensing and API calls among other features.

What Are Apryse C#'s License Options?

Apryse C# provides customizable pricing based on specific project requirements, including features, document volume, and deployment scenarios. You must contact their sales team for Apryse pricing information.