Duplicate Content Checker
Compare two pages (or a page and a text) and see how similar their content is.
About the Duplicate Content Checker
Duplicate content – the same or very similar text on more than one URL – makes pages compete with each other in search. Google usually shows only one version and may pick a different one from the one you want. It often happens with product variants, location pages, printer-friendly versions, copied supplier descriptions or content republished on other sites.
Enter two URLs, or a URL and a piece of text, and this checker compares the main content of each (menus, headers and footers are left out) using overlapping five-word phrases. You get an overall similarity percentage, how much of each page appears in the other, the exact sentences they share, and – for two pages – whether their titles, descriptions and canonical tags are set up correctly.
Frequently asked questions
Is duplicate content a Google penalty?
Not usually. Google filters duplicates and shows one version, so the others get little or no traffic. Only deliberately copied, manipulative content risks manual action.
How similar is too similar?
Above about 50% the pages are likely to compete; above 80% they are near-duplicates. Give each page a clear purpose with genuinely different content, or merge them.
How do I fix duplicate pages?
Merge them and 301-redirect the old URL, rewrite one page with unique content, or add a canonical tag on the duplicate pointing to the main version.