Rule-based cleanup for headings, lists, code fences, and spacing — with strict, readable, and change-highlight modes.
Last Updated: 22 Mar 2026
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Markdown Formatter helps you rule-based cleanup for headings, lists, code fences, and spacing — with strict, readable, and change-highlight modes. It is commonly used by developers, QA teams, DevOps users for markdown formatter, markdown cleaner, prettify markdown.
Consistent Markdown Without Manual Cleanup
Paste notes, README drafts, or AI-generated Markdown and get predictable structure: normalized ATX headings, tidy lists, trimmed noise, and fenced code blocks with a clean opener and closer.
Modes
Default Balanced cleanup: collapse extra blank lines, trim trailing whitespace (while preserving line-break spaces), and normalize bullets.
Strict Tighter blank-line limits and stronger structural hints so documents stay compact for repos and CI-friendly docs.
Readable Adds breathing room before headings and new list blocks so long documents are easier to scan.
Diff View
Switch to Changes to see a line-level before/after highlight so you can trust what moved before you copy the result.