ONLINE MARKDOWN HEALTHCHECK

Break Markdown. Find the problem. Fix the safe parts.

Paste Markdown or open a local .md file. The playground checks headings, anchors, duplicate/empty sections, and managed TOCs without uploading your content.

Browser score — Not analyzed

Browser scope: single-file Markdown rules only. For repository-wide relative files, cross-file anchors, standards, CI gates, and revert journaling, use npx docs-healthcheck.

MARKDOWN README.md

0 lines

Same safety model, browser-sized scope

Analyze

Read-only checks first. Your Markdown never leaves this tab.

Classify

Repairs are separated into SAFE, CONFIRM, and MANUAL.

Repair

The green button applies only deterministic SAFE fixes.

Re-check

The playground immediately analyzes the repaired Markdown again.