Free Duplicate Content Checker
Compare texts or pages and see exactly what they share.
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Audit your whole site (not just one page), track keyword rankings, schedule weekly checks and get an AI fix plan.
What does the Duplicate Content Checker do?
Compare two to five texts or URLs side by side. The checker breaks each text into overlapping word phrases and reports similarity, containment (how much of one text appears inside another) and every identical passage of eight words or more, highlighted in the original. For URLs, only the main content is compared — navigation, headers and footers are ignored.
How to use it
- 1Paste two texts or enter two URLs (add up to five).
- 2Pick the match sensitivity.
- 3Review the shared passages and make each page more distinct.
Frequently asked questions
- Is this a plagiarism checker for the whole web?
- No. It compares only the texts you provide — useful for product variants, location pages, syndicated posts or checking a rewrite against its source.
- How much duplication is too much?
- Shared boilerplate and quotes are normal. When most of a page matches another, consolidate them or point one to the other with a canonical tag.
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