Markdown
Markdown Duplicate Heading Finder
Find headings that repeat in a Markdown document.
How it works
- 1Paste your Markdown.
- 2Repeated heading texts are listed with their counts.
- 3Rename duplicates to avoid anchor clashes.
Use cases
- Prevent broken in-page links.
- Audit a merged document.
- Keep headings unique for SEO.
Frequently asked questions
Why do duplicate headings matter?
They produce duplicate anchor slugs (with -1, -2 suffixes), which can break links and confuse readers.
Does it match case?
It compares the exact heading text; rename clashing headings to fix them.
Is it private?
Yes. Everything runs in your browser — nothing is uploaded.
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