Content Duplicate Checker
Compare two web pages and get a content similarity score. Spot duplicate content, scrapers, and pages that should be canonicalized. Free, instant.
Frequently asked
How is similarity calculated?
We extract the visible text of both pages and compare overlapping 3-word phrases (Jaccard similarity). It's robust to small edits and reordering.
What score signals a duplicate-content problem?
70%+ between two of your own pages usually means you should canonicalize one to the other. Near-100% on a page you didn't publish may be a scraper.