How to detect common markdown syntax errors
- Step 1Drop the doc — Upload the Markdown to check.
- Step 2Find errors — Click Run — error report with line numbers generated.
- Step 3Fix and verify — Apply fixes; re-run until no errors remain.
Frequently asked questions
What errors does it find?+
Reversed link syntax, missing blank lines around blocks, multiple H1s, trailing whitespace, hard tabs, and more.
Will it find all rendering issues?+
Most common ones. Renderer-specific bugs may need manual review in your target renderer.
Can I auto-fix?+
Suggested fixes are provided where applicable. Apply manually or via Pro API.
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.