---
title: "HTML to PDF conversion guide in C# | Nutrient .NET SDK"
canonical_url: "https://www.nutrient.io/guides/dotnet/conversion/html-to-pdf/"
md_url: "https://www.nutrient.io/guides/dotnet/conversion/html-to-pdf.md"
last_updated: "2026-06-09T10:32:17.085Z"
description: "Learn how to convert HTML to PDF in C# with our step-by-step guide on using GdPictureDocumentConverter."
---

# Convert HTML to PDF using C# and .NET

HTML content can render differently across browsers, devices, and viewport sizes. Converting HTML to PDF gives you a fixed output format for sharing, archiving, and printing.

Use this workflow when you need to:

- Preserve layout and styling in a stable document format

- Distribute web content for offline access

- Archive rendered pages for audit or compliance workflows

## Prepare the project

Register the SDK license before running conversion logic. For setup details, refer to the [getting started with.NET SDK](https://www.nutrient.io/sdk/dotnet/getting-started.md) guide.

```csharp

using GdPicture14;

LicenseManager licence = new LicenseManager();
licence.RegisterKEY("");

```

## Set up the web browser engine

Configure a Chrome headless shell for HTML rendering:

```csharp

GdPictureDocumentUtilities.SetWebBrowserPath(GdPictureDocumentUtilities.FetchLatestChromeHeadlessShell(Environment.CurrentDirectory));

```

This call downloads the runtime on first use and reuses it on later runs.

If you run this workflow inside Docker on Linux, you also need to install Chrome in the image and run the container as a non-root user. Refer to the [running Chrome-based conversions in Docker](https://www.nutrient.io/guides/dotnet/deployment/headless-modes-google-chrome.md) guide.

## Convert the HTML

Create a document converter instance:

```csharp

using GdPictureDocumentConverter converter = new GdPictureDocumentConverter();

```

Load HTML from a URL:

```csharp

converter.LoadFromHttp(new("https://www.nutrient.io/sdk/dotnet"));

```

Save the rendered output to PDF:

```csharp

converter.SaveAsPDF(@"output.pdf");

```

## Handle errors

`LoadFromHttp` and `SaveAsPDF` return `GdPictureStatus` values. Use those values in your error handling flow. For details, refer to the [handling errors with.NET SDK](https://www.nutrient.io/guides/dotnet/best-practices.md#error-handling) guide.

## Conclusion

This workflow renders an HTML page through Chrome and saves the result as a PDF, preserving the page’s layout, fonts, images, and styling.






## Troubleshooting HTML-to-PDF with diagnostic logging

When HTML-to-PDF conversion fails (timeouts, blocked URLs, rendering issues), diagnostic logs help identify the root cause.

### Console diagnostics

You can route SDK diagnostics to the console with `Microsoft.Extensions.Logging`:

```csharp

using GdPicture.Internal.Globals;
using Microsoft.Extensions.Logging;

using ILoggerFactory loggerFactory = LoggerFactory.Create(builder =>
{
    builder.AddFilter("GdPicture.Internal.HTML", LogLevel.Debug).AddConsole();
});

GdPictureLoggerFactory.SetLogger(loggerFactory);

```

Use `LogLevel.Trace` for protocol-level troubleshooting (very verbose), or `LogLevel.Information` for cleaner milestone-focused logs.

### File-based diagnostics

For production troubleshooting, persist logs to a file. One option is `NReco.Logging.File`:

```csharp

using GdPicture.Internal.Globals;
using Microsoft.Extensions.Logging;
using NReco.Logging.File;

using ILoggerFactory loggerFactory = LoggerFactory.Create(builder =>
{
    builder.AddFilter("GdPicture.Internal.HTML", LogLevel.Debug).AddConsole().AddFile("html-conversion.log", opts =>
        {
            opts.Append = false;
            opts.FileSizeLimitBytes = 10 * 1024 * 1024;
            opts.MaxRollingFiles = 3;
        });
});

GdPictureLoggerFactory.SetLogger(loggerFactory);

```

This gives you both live console output and persistent logs for post-mortem analysis.
---

## Related pages

- [Convert files to PDF in C# .NET](/guides/dotnet/conversion.md)
- [Convert to MS Office from any file in C#](/guides/dotnet/conversion/any-file-to-office.md)
- [Convert any image to PDF in C#](/guides/dotnet/conversion/any-image-to-pdf.md)
- [Convert bitmap (BMP) to PDF in C#](/guides/dotnet/conversion/bmp-to-pdf.md)
- [Convert DWG or DXF to PDF in C#](/guides/dotnet/conversion/cad-to-pdf.md)
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- [Embed a font in a Word document](/guides/dotnet/conversion/embed-font-in-word-document.md)
- [Convert Excel to PDF in C#](/guides/dotnet/conversion/excel-to-pdf.md)
- [HTML to PDF file logging diagnostics](/guides/dotnet/conversion/html-to-pdf-file-logging-diagnostics.md)
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- [Convert HTML to Word in C#](/guides/dotnet/conversion/html-to-word.md)
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- [Converting a document from Markdown to PDF format](/guides/dotnet/conversion/markdown-to-pdf.md)
- [Merge and combine multiple files into a PDF in C#](/guides/dotnet/conversion/merge-to-pdf.md)
- [Convert MS Office files to PDFs in C#](/guides/dotnet/conversion/office-to-pdf.md)
- [Convert PDF to bitmap (BMP) in C#](/guides/dotnet/conversion/pdf-to-bmp.md)
- [Convert PDF to Excel in C#](/guides/dotnet/conversion/pdf-to-excel.md)
- [Converting PDF to HTML](/guides/dotnet/conversion/pdf-to-html.md)
- [Convert images to PDFs in C#](/guides/dotnet/conversion/pdf-to-image.md)
- [Convert PDF to JPG in C#](/guides/dotnet/conversion/pdf-to-jpg.md)
- [Converting a document from PDF to Markdown format](/guides/dotnet/conversion/pdf-to-markdown.md)
- [Convert PDF to other images in C#](/guides/dotnet/conversion/pdf-to-other-image.md)
- [Convert PDF to PDF/UA](/guides/dotnet/conversion/pdf-to-pdf-ua.md)
- [Convert PDF to PDF/A](/guides/dotnet/conversion/pdf-to-pdfa.md)
- [Convert PDF to PNG in C#](/guides/dotnet/conversion/pdf-to-png.md)
- [Convert PDF to PowerPoint in C#](/guides/dotnet/conversion/pdf-to-powerpoint.md)
- [Convert PDF to SVG in C#](/guides/dotnet/conversion/pdf-to-svg.md)
- [Convert PDF to TIFF in C#](/guides/dotnet/conversion/pdf-to-tiff.md)
- [Convert PDF to Word in C#](/guides/dotnet/conversion/pdf-to-word.md)
- [Convert PNG to PDF in C#](/guides/dotnet/conversion/png-to-pdf.md)
- [Convert PowerPoint to PDF in C#](/guides/dotnet/conversion/powerpoint-to-pdf.md)
- [Convert RTF to Word in C#](/guides/dotnet/conversion/rtf-to-docx.md)
- [Convert RTF to PDF in C#](/guides/dotnet/conversion/rtf-to-pdf.md)
- [Convert SVG to PDF in C#](/guides/dotnet/conversion/svg-to-pdf.md)
- [Convert text to PDF in C#](/guides/dotnet/conversion/text-to-pdf.md)
- [Convert TIFF to PDF in C#](/guides/dotnet/conversion/tiff-to-pdf.md)
- [Convert to Word, Excel, or PowerPoint in C#](/guides/dotnet/conversion/to-office.md)
- [Converting Word documents with comments to PDF](/guides/dotnet/conversion/word-document-to-pdf-including-comments.md)
- [Converting Word documents to PDF/UA](/guides/dotnet/conversion/word-document-to-pdf-ua.md)
- [Convert Word to PDF in C#](/guides/dotnet/conversion/word-to-pdf.md)