How to convert github-flavored markdown to commonmark
- Step 1Drop GFM Markdown — Upload Markdown with GitHub-specific features.
- Step 2Convert — Click Run — GFM extensions are converted to CommonMark.
- Step 3Use in strict renderer — The result renders cleanly in CommonMark-only systems.
Frequently asked questions
What GFM features are converted?+
Task lists become plain lists, strikethrough becomes <del>, autolinks get explicit angle brackets.
Will tables survive?+
GFM tables are technically a GFM extension but most CommonMark renderers support them.
Why not preserve all features?+
Strict CommonMark renderers ignore unknown syntax. Converting ensures the content renders correctly.
Privacy first
All Markdown processing runs locally in your browser using JavaScript. No file is ever uploaded to JAD Apps servers — only metadata counters are saved for signed-in dashboard stats.