
Converting HTML content to PDF is essential for archiving, sharing, or printing documents. The reliable .NET HTML to PDF library provided by Aspose.HTML for .NET enables you to convert HTML files, strings, and live URLs into high-quality PDF documents efficiently. In this article, you will learn how to utilize the .NET core HTML to PDF API to programmatically generate PDFs from HTML in C#, complete with practical examples and advanced customization options.
Topics Covered
- C# API for HTML to PDF Conversion
- Generate PDF from HTML File
- Customize HTML to PDF Conversion
- Convert HTML String to PDF
- Convert Live URL to PDF
C# API to Generate PDF from HTML
Aspose.HTML for .NET is a powerful library that offers seamless HTML to PDF conversion capabilities, along with support for other formats such as XPS and images. This library can be easily integrated into any .NET application, enabling .NET core HTML to PDF conversion. Developers can convert HTML documents programmatically with high accuracy using this efficient HTML to PDF C# library.
Key Features
- Multiple Input Types: Effortlessly convert HTML files, strings, or live URLs to PDFs.
- Customizable Output: Modify save options such as resolution, compression, and watermarks for precise control.
- Cross-Platform Support: Fully compatible with Windows, macOS, and Linux.
Installation: You can add Aspose.HTML for .NET to your project using NuGet:
PM> Install-Package Aspose.Html
Generate PDF Document from HTML in C#
Generating a PDF document from an HTML file is straightforward. Follow these simple steps:
- Load an HTML document using the HTMLDocument class.
- Create an instance of the PdfSaveOptions class.
- Call the Converter.ConvertHTML() method to generate the PDF. This method accepts the HTMLDocument, PdfSaveOptions, and the output PDF file path as arguments.
The following code sample illustrates how to generate a PDF document from an HTML file using C#.

Generate PDF Document from HTML in C#
Convert HTML to PDF with Save Options in C#
You can generate a PDF document from an HTML file while specifying additional save options by following these steps:
- Load the HTML document using the HTMLDocument class.
- Create an instance of the PdfSaveOptions class.
- Specify additional save options such as HorizontalResolution and VerticalResolution.
- Call the Converter.ConvertHTML() method for PDF generation.
The following code sample demonstrates how to generate a PDF from an HTML file with additional options in C#.
Generate PDF from HTML String in C#
Creating a PDF document from an HTML string is also simple. Follow these steps:
- Create an instance of the PdfSaveOptions class.
- Define any save options as needed.
- Call the Converter.ConvertHTML() method to generate the PDF. This method takes the HTML string, PdfSaveOptions, and the output PDF file path as arguments.
The following code sample illustrates how to generate a PDF from an HTML string using C#.
Generate PDF from Live URL in C#
Now, let’s explore how to save a webpage from a URL as a PDF document:
- Create an instance of the Url class with the URL of the webpage.
- Create an instance of the PdfSaveOptions class.
- Define any desired save options.
- Save the HTML as a PDF using the Converter.ConvertHTML() method, passing in the Url, PdfSaveOptions, and the output PDF file path as arguments.
The following code sample depicts how to generate a PDF from a live URL using C#.
Get Free License
You can get a free temporary license to try Aspose.HTML for .NET without evaluation limitations. This is a great opportunity to explore the C# HTML to PDF API free trial and assess its features.
Conclusion
In this article, we have learned how to:
- Load an HTML file programmatically.
- Define PDF save options.
- Save an HTML string as PDF.
- Save a webpage as a PDF document.
- Convert an HTML file to PDF in C#.
Whether you’re utilizing Aspose or exploring other .NET HTML to PDF open source alternatives, you can deepen your understanding of the Aspose.HTML for .NET API using the documentation. If you have further questions, please feel free to reach out via our free support forum.