HTML to PDF Converter Comparison: Free vs Paid Libraries for .NET

Quickstart: Create PDF from HTML String in C#

Converting HTML strings to PDF is fundamental for generating dynamic documents like invoices, reports, and certificates. IronPDF makes this process remarkably simple.

This converts HTML strings to PDF for dynamic content like invoices. What takes hours with free libraries takes minutes with IronPDF's tested rendering engine.

Output

Quickstart: Convert Web Page to PDF with Custom Settings

IronPDF provides extensive configuration options for converting web pages to PDFs, including JavaScript rendering, custom margins, and media type settings.

This converts web pages to PDF with custom settings. RenderDelay ensures JavaScript loads completely—solving common rendering issues. Support provides code examples and best practices.

Output

ROI Consideration: The time saved on implementation, debugging, and maintenance with a commercial library can offset the license cost relatively quickly, depending on team size and project complexity.

Verdict: IronPDF suits teams needing reliable conversion, dynamic documents, and full control. The free trial enables risk-free evaluation.

using System.IO;
using DinkToPdf;
using DinkToPdf.Contracts;

var doc = new HtmlToPdfDocument()
{
    GlobalSettings = { PaperSize = PaperKind.A4 },
    Objects =
    {
        new ObjectSettings
        {
            HtmlContent = "<h1>Report</h1><div style='page-break-after: always;'>Page 1</div><div>Page 2</div>"
        }
    }
};

var converter = new BasicConverter(new PdfTools());
byte[] pdfBytes = converter.Convert(doc);
File.WriteAllBytes("Report.pdf", pdfBytes);

using System.IO;
using DinkToPdf;
using DinkToPdf.Contracts;

var doc = new HtmlToPdfDocument()
{
    GlobalSettings = { PaperSize = PaperKind.A4 },
    Objects =
    {
        new ObjectSettings
        {
            HtmlContent = "<h1>Report</h1><div style='page-break-after: always;'>Page 1</div><div>Page 2</div>"
        }
    }
};

var converter = new BasicConverter(new PdfTools());
byte[] pdfBytes = converter.Convert(doc);
File.WriteAllBytes("Report.pdf", pdfBytes);

Imports System.IO
Imports DinkToPdf
Imports DinkToPdf.Contracts

Dim doc As New HtmlToPdfDocument() With {
    .GlobalSettings = New GlobalSettings() With {
        .PaperSize = PaperKind.A4
    },
    .Objects = {
        New ObjectSettings() With {
            .HtmlContent = "<h1>Report</h1><div style='page-break-after: always;'>Page 1</div><div>Page 2</div>"
        }
    }
}

Dim converter As New BasicConverter(New PdfTools())
Dim pdfBytes As Byte() = converter.Convert(doc)
File.WriteAllBytes("Report.pdf", pdfBytes)

This creates multi-page documents with breaks. Teams commonly encounter native dependency issues (the wkhtmltopdf binary) that require non-trivial troubleshooting time before reaching a stable production setup.

Output

using System.IO;
using DinkToPdf;
using DinkToPdf.Contracts;

var doc = new HtmlToPdfDocument()
{
    Objects = { new ObjectSettings { Page = "___PROTECTED_URL_82___" } }
};
var converter = new BasicConverter(new PdfTools());
byte[] pdfBytes = converter.Convert(doc);
File.WriteAllBytes("output.pdf", pdfBytes);

using System.IO;
using DinkToPdf;
using DinkToPdf.Contracts;

var doc = new HtmlToPdfDocument()
{
    Objects = { new ObjectSettings { Page = "___PROTECTED_URL_82___" } }
};
var converter = new BasicConverter(new PdfTools());
byte[] pdfBytes = converter.Convert(doc);
File.WriteAllBytes("output.pdf", pdfBytes);

Imports System.IO
Imports DinkToPdf
Imports DinkToPdf.Contracts

Dim doc = New HtmlToPdfDocument() With {
    .Objects = {New ObjectSettings With {.Page = "___PROTECTED_URL_82___" }}
}
Dim converter = New BasicConverter(New PdfTools())
Dim pdfBytes As Byte() = converter.Convert(doc)
File.WriteAllBytes("output.pdf", pdfBytes)

This converts web pages to PDF. Modern JavaScript frameworks render incorrectly. Limited support for custom fonts and responsive design compared to Chrome-based renderers.

Output

True Cost Analysis: Factor in the ongoing developer time for dependency management, platform-specific debugging, and keeping up with wkhtmltopdf's archived codebase—these hidden costs can add up over time and may exceed a commercial license fee depending on your team's hourly rate.

Verdict: DinkToPdf suits small projects but lacks advanced features. Consider the long-term maintenance burden before production use.

Quickstart: Generate PDF from Dynamic HTML with PuppeteerSharp

PuppeteerSharp provides effective browser automation capabilities for PDF generation, especially useful for JavaScript-heavy content.

Converts dynamic HTML with JavaScript execution. Production deployments require additional effort for crash handling, process lifecycle management, and async coordination.

Output

using PuppeteerSharp;
using PuppeteerSharp.Media;
using System;
using System.Threading.Tasks;

class Program
{
    static async Task Main()
    {
        var chromePath = @"C:\Program Files\Google\Chrome\Application\chrome.exe";

        if (!System.IO.File.Exists(chromePath))
        {
            Console.WriteLine("Chrome/Chromium executable not found.");
            return;
        }

        await using var browser = await Puppeteer.LaunchAsync(new LaunchOptions
        {
            Headless = true,
            ExecutablePath = chromePath,
            Args = new[] { "--no-sandbox" }
        });

        await using var page = await browser.NewPageAsync();
        await page.GoToAsync("___PROTECTED_URL_83___");
        await page.PdfAsync("WebPage.pdf", new PdfOptions
        {
            MarginOptions = new MarginOptions { Top = "50px", Bottom = "50px" }
        });

        Console.WriteLine("PDF generated successfully!");
    }
}

using PuppeteerSharp;
using PuppeteerSharp.Media;
using System;
using System.Threading.Tasks;

class Program
{
    static async Task Main()
    {
        var chromePath = @"C:\Program Files\Google\Chrome\Application\chrome.exe";

        if (!System.IO.File.Exists(chromePath))
        {
            Console.WriteLine("Chrome/Chromium executable not found.");
            return;
        }

        await using var browser = await Puppeteer.LaunchAsync(new LaunchOptions
        {
            Headless = true,
            ExecutablePath = chromePath,
            Args = new[] { "--no-sandbox" }
        });

        await using var page = await browser.NewPageAsync();
        await page.GoToAsync("___PROTECTED_URL_83___");
        await page.PdfAsync("WebPage.pdf", new PdfOptions
        {
            MarginOptions = new MarginOptions { Top = "50px", Bottom = "50px" }
        });

        Console.WriteLine("PDF generated successfully!");
    }
}

Imports PuppeteerSharp
Imports PuppeteerSharp.Media
Imports System
Imports System.Threading.Tasks

Module Program
    Async Function Main() As Task
        Dim chromePath As String = "C:\Program Files\Google\Chrome\Application\chrome.exe"

        If Not System.IO.File.Exists(chromePath) Then
            Console.WriteLine("Chrome/Chromium executable not found.")
            Return
        End If

        Await Using browser = Await Puppeteer.LaunchAsync(New LaunchOptions With {
            .Headless = True,
            .ExecutablePath = chromePath,
            .Args = New String() {"--no-sandbox"}
        })

            Await Using page = Await browser.NewPageAsync()
                Await page.GoToAsync("___PROTECTED_URL_83___")
                Await page.PdfAsync("WebPage.pdf", New PdfOptions With {
                    .MarginOptions = New MarginOptions With {.Top = "50px", .Bottom = "50px"}
                })
            End Using
        End Using

        Console.WriteLine("PDF generated successfully!")
    End Function
End Module

Production requires managing Chrome processes, crash handling, and retry logic—adding complexity compared to dedicated libraries.

Output

Infrastructure Considerations:

• Additional 2-4GB RAM per server for Chrome processes
• DevOps effort for Chrome version management and updates
• Debugging crashes and memory leaks adds ongoing maintenance overhead

Verdict: PuppeteerSharp excels at pixel-perfect rendering but requires substantial infrastructure investment and DevOps expertise.

Quickstart: Create PDF from HTML String with SelectPdf

SelectPdf offers a straightforward approach to converting HTML content to PDF documents, making it suitable for enterprise applications requiring consistent output.

Converts inline HTML for dynamic reports. SelectPdf handles most CSS correctly, though CSS3 features may need workarounds.

Output

using SelectPdf;

var converter = new SelectPdf.HtmlToPdf();
converter.Options.DisplayHeader = true;
converter.Options.DisplayFooter = true;

var doc = converter.ConvertUrl("___PROTECTED_URL_84___");
doc.Save("WebPageWithHeader.pdf");

using SelectPdf;

var converter = new SelectPdf.HtmlToPdf();
converter.Options.DisplayHeader = true;
converter.Options.DisplayFooter = true;

var doc = converter.ConvertUrl("___PROTECTED_URL_84___");
doc.Save("WebPageWithHeader.pdf");

Imports SelectPdf

Dim converter As New SelectPdf.HtmlToPdf()
converter.Options.DisplayHeader = True
converter.Options.DisplayFooter = True

Dim doc = converter.ConvertUrl("___PROTECTED_URL_84___")
doc.Save("WebPageWithHeader.pdf")

Converts web pages with custom headers/footers for branded documents. Header/footer options meet most business needs.

Output

Cost-Benefit Analysis:

• License: $499–$1,599 by deployment
• Support: 24-48 hour average response

Verdict: SelectPdf delivers stable enterprise features. Higher pricing justified for teams prioritizing reliability over modern features.## Why Choose EvoPdf for API-Driven PDF Workflows?

EvoPdf offers advanced HTML to PDF conversion capabilities, ideal for server-side processing and high-throughput scenarios.

EvoPdf is well-suited for enterprise applications with asynchronous generation for web APIs. The byte[] output pattern integrates seamlessly with microservices architectures.

Quickstart: Generate PDF with EvoPdf

EvoPdf's byte array approach offers flexibility for API-driven workflows and cloud architectures.

Returns byte[] for easy file writing or API streaming. This approach reduces memory usage in high-volume scenarios.

Output

using EvoPdf;
using System.IO;

var htmlToPdf = new HtmlToPdfConverter();
byte[] pdfBytes = htmlToPdf.ConvertUrl("___PROTECTED_URL_85___");
File.WriteAllBytes("WebPageEvoPdf.pdf", pdfBytes);

using EvoPdf;
using System.IO;

var htmlToPdf = new HtmlToPdfConverter();
byte[] pdfBytes = htmlToPdf.ConvertUrl("___PROTECTED_URL_85___");
File.WriteAllBytes("WebPageEvoPdf.pdf", pdfBytes);

Imports EvoPdf
Imports System.IO

Dim htmlToPdf As New HtmlToPdfConverter()
Dim pdfBytes As Byte() = htmlToPdf.ConvertUrl("___PROTECTED_URL_85___")
File.WriteAllBytes("WebPageEvoPdf.pdf", pdfBytes)

Quick web page archiving without HTML preprocessing. Efficiently handles large documents and complex layouts.

Output

Investment Analysis:

• License: $450–$1,400 by deployment
• API Design: byte[] output pattern simplifies integration with streaming and cloud workflows
• Infrastructure: Efficient memory usage suits high-volume scenarios

Verdict: EvoPdf excels for API-driven workflows and high-volume generation. Investment returns quickly for API-first architectures.