Convert HTML to Markdown Online or in C#
Serialize supported HTML structure as readable Markdown
Download from NuGetProgrammatic HTML to Markdown Conversion for .NET
Aspose.HTML for .NET converts HTML documents to Markdown inside C# applications. Load a file, URL, string, stream, or HTMLDocument , create MarkdownSaveOptions , and use the corresponding save workflow.
This is a structural conversion rather than browser rendering, so CSS presentation and complex page layout are not preserved.
C# Code Example and Interactive HTML to Markdown Converter
Use the interactive example below to convert an HTML file or URL to Markdown and review the corresponding C# code. Use the generated code as a starting point, then add the settings required by your application.
using Aspose.Html;
using Aspose.Html.Converters;
using Aspose.Html.Saving;
using HTMLDocument document = new HTMLDocument("{{input lower}}");
{{#if_output 'PDF'}}
PdfSaveOptions options = new PdfSaveOptions();
{{/if_output}}
{{#if_output 'MHTML'}}
MHTMLSaveOptions options = new MHTMLSaveOptions();
{{/if_output}}
{{#if_output 'DOCX'}}
DocSaveOptions options = new DocSaveOptions();
{{/if_output}}
{{#if_output 'XPS'}}
XpsSaveOptions options = new XpsSaveOptions();
{{/if_output}}
{{#if_output 'MD'}}
MarkdownSaveOptions options = new MarkdownSaveOptions();
{{/if_output}}
{{#if_output 'BMP' 'JPG' 'GIF' 'PNG' 'TIFF'}}
ImageSaveOptions options = new ImageSaveOptions(ImageFormat.{{output param2 camel}});
{{/if_output}}
{{#if_output 'BMP' 'JPG' 'GIF' 'PNG' 'TIFF' 'PDF' 'MHTML' 'MD' 'XPS' 'DOCX'}}
Converter.ConvertHTML(document, options, "output.{{output lower}}");
{{/if_output}}
{{#if_output 'XHTML'}}
document.Save("output.xhtml", new HTMLSaveOptions() { DocumentType = HTMLSaveOptions.XHTML });
{{/if_output}}
How to Convert HTML to Markdown in C#
- Load the source with an HTMLDocument constructor.
- Create
MarkdownSaveOptionsand configure the required output settings. - Call Converter.ConvertHTML() with the document, options, and output destination.
- Validate the generated Markdown with representative source documents.
HTML to Markdown Conversion Options and Documentation
Read the
HTML to Markdown documentation
and consult the MarkdownSaveOptions reference for available settings.
Use
MarkdownSaveOptions
to control HTML-to-Markdown serialization. Markdown represents document structure rather than browser styling, so review headings, lists, links, images, code, and tables in the generated .md file.
HTML to Markdown Conversion Notes
- Presentation is simplified. Markdown cannot represent the full HTML and CSS presentation model.
- Complex structures need review. Test tables, nested elements, custom components, and unsupported markup.
- References depend on destination. Validate relative links and images against the generated
.mdlocation. - Source cleanup improves output. Remove navigation, ads, or unrelated page chrome when content extraction is the goal.
- Markdown renderers differ. Test the result in the renderer used by the destination system.
Install Aspose.HTML for .NET
Add the package to your project, then use the C# example above as the minimal HTML to Markdown workflow.
Install Aspose.HTML for .NET from NuGet with the .NET CLI:
dotnet add package Aspose.HTML
You can also use the NuGet Package Manager UI or run Install-Package Aspose.HTML in the Package Manager Console. See the
installation guide
for setup details, or request a
temporary license
to evaluate the API without evaluation limitations.
HTML to Markdown Conversion FAQ
1. How do I convert HTML to Markdown in C#?
Load the source into an HTMLDocument, create MarkdownSaveOptions, and call Converter.ConvertHTML() with the document and output destination. The converter serializes supported HTML structure as Markdown rather than reproducing the browser layout.
2. Does Markdown preserve CSS styling?
No. Markdown can represent supported document structure such as headings, lists, links, and emphasis, but it does not preserve the page’s CSS layout and visual styling.
3. Can I convert an HTML string or URL?
Yes. Create the HTMLDocument from the HTML string or webpage URL, then run the same Markdown conversion. For inline markup, supply a base URI when relative links or resources must be resolved.
4. What happens to complex HTML elements?
Elements without a direct Markdown representation may be simplified or require post-processing; test the source patterns used by your application.
5. Should I clean the HTML before conversion?
Usually yes when only article content is required. Removing navigation and unrelated page elements produces cleaner Markdown.
Other Supported HTML Conversions
Explore other HTML conversion APIs and C# examples: