GitHub Flavored Markdown (GFM) extends standard markdown with tables, task lists, fenced code blocks with syntax highlighting, autolinks, strikethrough, and emoji shortcodes. Paste your README, issue body, or comment and convert to clean HTML that matches what GitHub renders.
When to use this
Use to: preview a README before committing, convert a long GitHub issue body to a blog post, extract HTML from PR descriptions for documentation, port GFM content to a non-GitHub CMS that needs HTML, debug markdown rendering issues.
Frequently Asked Questions
Does it support emoji shortcodes like :rocket:?
Yes - GFM-style emoji shortcodes (`:rocket:` -> 🚀, `:warning:` -> ⚠️) are converted to actual emoji characters in the output HTML. Same set GitHub supports - if it works on GitHub.com, it should work here.
What about GitHub's special alert blocks (> [!NOTE])?
Yes - GitHub's `> [!NOTE]`, `> [!WARNING]`, `> [!IMPORTANT]`, `> [!TIP]`, `> [!CAUTION]` callout blocks are recognized and rendered with appropriate CSS classes. Style them with your own CSS or use the bundled defaults.
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