HTML format guide and tools

HTML describes web document structure; Markdown represents a simpler text-based structure.

Before you convert

Use these tools for document markup, not a complete website mirror. Scripts and unsupported features do not survive conversion. Review links and output before publishing.

Check each tool’s processing label: browser and server tools handle files differently.

Available HTML tools

Runs in browser

Convert Markdown to HTML Online

Convert GitHub Flavored Markdown (GFM) into clean HTML with table support and XSS sanitization.

Documents & DataOpen tool

Runs in browser

Convert HTML to Markdown Online

Convert HTML documents and web snippets into clean, readable GitHub Flavored Markdown in your browser.

Documents & DataOpen tool