Duplicate Title Finder
Paste one title per line to review exact duplicate groups and similar pairs without uploading your content.
A QUICK WALKTHROUGH
How to use this tool
- Enter up to 200 titles, one per line.
- Choose a similarity threshold and compare.
- Review line numbers and download the plain-text report.
Transparent matching
Exact groups compare trimmed titles. Similar pairs use NFKC normalization, lowercase letters, removal of punctuation and whitespace, and multiset character-bigram Dice similarity. This is text similarity, not a semantic or SEO score.
Limits and privacy
At most 200 nonempty titles, 200 Unicode characters per title and 100 KB total. Blank lines are ignored; original line numbers remain. Input and reports stay in your browser.
GOOD TO KNOW
Common questions
Does it crawl a website?
No. Paste the titles yourself; URLs are not fetched.
Are similar pairs grouped transitively?
No. Each pair is compared separately, so A matching B and B matching C does not imply A matches C.