.NET API for working with real-world HTML

Create HTML pages from Scratch

Load existing HTML from file, stream or URL

Implement W3C specifications

Implement templates using template merger

Fill the template with various data sources

Render HTML Canvas 2D to PDF

Add, replace or remove nodes

Extract data from HTML documents

Load EPUB and MHTML file formats

Render HTML to raster image formats

Render multiple documents at once

Implement Markdown to HTML converter

Apply header and footer during HTML to PDF

Convert HTML to PDF, Image and Other Formats

API allows with just a few lines of code implement HTML to PDF, HTML to Image or any other conversion for your .NET applications.

// Load the HTML file to be converted

using (var document = new Aspose.Html.HTMLDocument("document.html"))

{

    // Convert HTML to PDF

    Aspose.Html.Converters.Converter.ConvertHTML(document, new PdfSaveOptions(), "output.pdf");



    // Convert HTML to Image

    Aspose.Html.Converters.Converter.ConvertHTML(document, new ImageSaveOptions(ImageFormat.Png), "output.png");

}

Markdown Support

Markdown is a markup language with a plain-text-formatting syntax. Markdown is often used as a format for documentation and readme files since it allows writing in an easy-to-read and easy-to-write style. Aspose.HTML provides a powerful and flexible Markdown Converter that can convert in both directions from Markdown to HTML and from HTML to Markdown. Moreover, the converter API has a set of predefined rules, so you can convert HTML to Markdown using the authentic Markdown syntax, GitLab Flavored Markdown modification or even configure the rules for your needs.

// Load HTML file

using (var document = new Aspose.Html.HTMLDocument("document.html"))

{

    // Convert HTML to Markdown using a set of features supported by GitLab Flavored Markdown

    document.Save("output.md", Aspose.Html.Saving.MarkdownSaveOptions.Git);

}

// Convert Markdown to HTML

Aspose.Html.Converters.Converter.ConvertMarkdown("document.md", "output.html");

Electronic Books and Web Archives

The Electronic Books (EPUB) formats and Web Archive (MHTML) formats supported out-of-the-box. API offers high fidelity rendering EPUB and MHTML files to the supported output formats such as PDF, XPS and Image file formats.

//  Convert EPUB to PDF.

Aspose.Html.Converters.Converter.ConvertEPUB("document.epub", new Aspose.Html.Saving.PdfSaveOptions(), "output.pdf");

//  Convert MHTML to PDF.

Aspose.Html.Converters.Converter.ConvertMHTML("document.mht", new Aspose.Html.Saving.PdfSaveOptions(), "output.pdf");

Web Scraping

Web scraping, also well known as web harvesting, web data extraction or web crawling, is a technique to extract data from a website. Aspose.HTML doesn't support a Web Scraping module out-of-the-box. However, using Aspose.HTML API that is entirely based on W3C specification and supports XPath and CSS Selector queries you can easily inspect the content of any HTML document and create your own Web Scraping solution.

// Create an instance of the HTML document with a website as a parameter.

using (var document = new Aspose.Html.HTMLDocument("https://en.wikipedia.org/wiki/Aspose_API"))

{

    // Get all anchor-elements

    var elements = document.QuerySelectorAll("a");



    // Dump the anchor-element data to the console.

    elements.Cast<HTMLAnchorElement>().ToList().ForEach(x =>

    {

        System.Console.WriteLine("[Href]: " + x.Href);

        System.Console.WriteLine("[Content]: " + x.TextContent);

    });

}