Aspose.HTML for .NET is an advanced and comprehensive HTML processing API built entirely in C#. Designed for cross‑platform application development, it enables developers to create, edit, parse, navigate, merge, and convert HTML documents and web content without requiring external tools or browsers. The library fully supports HTML, XHTML, MHTML, XML, SVG, Markdown, and EPUB formats, and provides rendering capabilities to PDF, DOCX, XPS, raster images, and other widely used file types. Integrated with modern web standards, Aspose.HTML for .NET incorporates CSS, HTML Canvas, XPath, JavaScript, and SVG specifications, allowing developers to implement sophisticated manipulation, transformation, and rendering scenarios. It supports both 32‑bit and 64‑bit .NET environments, including ASP.NET, WinForms, WCF, and .NET Core applications, and includes built‑in Linux support without System.Drawing.Common dependencies.

Features

HTML Creation, Editing & Navigation

• Create HTML from scratch programmatically.
• Load HTML from files, URLs, streams, and strings.
• Add, replace, or remove HTML nodes.
• Navigate documents using XPath queries or CSS selectors.
• Edit HTML, MHTML, XHTML, Markdown, and EPUB content.
• Generate HTML code dynamically.
• Manage images, tables, canvases, and styles inside HTML.
• Implement W3C‑based DOM manipulations. File Conversion & Rendering
• Convert HTML, XHTML, MHTML, Markdown, EPUB, and SVG into formats such as:
  • PDF, DOCX, XPS, JPEG, PNG, BMP, TIFF, GIF, MD, MHTML, and more.
• Render HTML Canvas 2D to PDF.
• Apply headers and footers during HTML‑to‑PDF conversion.
• Render multiple documents at once.
• Perform high‑quality document rendering and screen‑accurate output. Markdown Processing
• Parse, edit, and convert Markdown (MD) files.
• Convert HTML to Markdown using authentic or GitLab‑flavored syntax.
• Convert Markdown to HTML in a single line of code.
• Add lists, links, headers, images, code blocks, bold/italic formatting, and more. Merging Capabilities
• Merge HTML, MHTML, EPUB, and Markdown documents.
• Combine multiple documents into PDF, DOCX, XPS, TIFF, and image formats.
• Perform real-time merging via the Renderer API. Web & Data Extraction
• Extract data from any HTML document using CSS selectors and XPath queries.
• Perform simple web scraping using built-in DOM and navigation tools.
• Extract content, images, keywords, and metadata from web pages.
• Includes free online data extraction tools. EPUB & Web Archive Processing
• Load and process EPUB and MHTML files.
• Convert EPUB and MHTML to PDF, DOCX, images, and other formats.
• Supports fixed-layout and raster conversion workflows. Accessibility & Utilities
• Check website accessibility compliance.
• Use Pixel Calculator and other utility tools.
• Manage document sandboxing and security.

Benefits

• Eliminates dependency on external HTML editors, browsers, or rendering engines.
• Provides a unified framework for HTML parsing, editing, conversion, and rendering.
• Enables building complex HTML‑driven workflows in .NET applications.
• Ensures consistent, high-quality output across file formats.
• Supports automation for document generation, reporting, web content transformation, and digital publishing.
• Cross-platform compatibility (Windows, Linux, .NET Core).
• Scalable for enterprise-grade document workflows and high‑volume processing.