Aspose.HTML for .NET Documentation – Parse, Convert, Process HTML Files

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Aspose.HTML for .NET is a C# API for creating, loading, editing, rendering, scraping, validating, and converting web documents in .NET applications. Use it when your application needs programmatic control over HTML DOM nodes, CSS, resources, network requests, accessibility checks, or output formats such as PDF, XPS, DOCX, PNG, JPG, TIFF, BMP, and GIF.

C# HTML Development Topics

Getting Started – install Aspose.HTML from NuGet, check system requirements, review supported file formats, run examples, and configure licensing.
Working with Documents – create, load, edit, and save HTML files, URLs, streams, DOM nodes, elements, attributes, CSS, resources, and save options.
Converting Between Formats – convert HTML, SVG, MHTML, EPUB, and Markdown to PDF, XPS, DOCX, PNG, JPG, TIFF, BMP, GIF, and Markdown.
Fine-Tuning Converters – control page size, margins, resolutions, media type, background color, fonts, output streams, save options, renderers, and rendering devices.
Data Extraction – navigate HTML, use CSS selectors or XPath, download images and SVG, save files from URLs, and archive complete web pages.
Web Accessibility – check HTML documents for WCAG-related issues, inspect errors and warnings, validate color contrast, and save accessibility reports.
Message Handlers – customize request processing for authentication, network filtering, timeouts, custom schemes, ZIP-based workflows, and execution logging.

Convert HTML to PDF in C#

The example below shows a common Aspose.HTML for .NET workflow: load an HTML document, create PDF save options, and write a PDF file.

1using Aspose.Html;
2using Aspose.Html.Converters;
3using Aspose.Html.Saving;
4
5using var document = new HTMLDocument("document.html");
6var options = new PdfSaveOptions();
7
8Converter.ConvertHTML(document, options, "document.pdf");

For more output formats and conversion settings, see the HTML conversion guides.

Aspose.HTML for .NET Resources

Aspose.HTML also provides free online HTML applications for conversion, merging, SEO analysis, code generation, URL tools, and web accessibility checks. Use the web apps for quick manual tasks, and use Aspose.HTML for .NET when you need the same HTML workflows automated in C# applications.

HTML Tutorial