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Copyscape is dedicated to protecting your valuable content online. We provide the world's most powerful and most popular online plagiarism detection solutions, ranked #1 by independent tests. Copyscape's products are trusted by millions of website owners worldwide to check the originality of their new content, prevent duplicate content, and search for copies of existing content online.
Copyscape Services

Copyscape provides a free plagiarism checker for finding copies of your web pages online, as well as two more powerful professional solutions for preventing content theft and content fraud:

Copyscape Premium provides more powerful plagiarism detection than the free service, plus a host of other features, including copy-paste originality checks, batch search, private index, case tracking and an API.

Copysentry provides comprehensive protection for your website by automatically scanning the web daily or weekly and emailing you when new copies of your content are found.

Copyscape also offers free plagiarism warning banners for your website to warn potential plagiarists against stealing your content, a free tool to compare two web pages or articles, and a comprehensive guide to dealing with plagiarism.

More about Copyscape

Copyscape is provided by Indigo Stream Technologies Ltd, a private company co-founded by Gideon Greenspan, which also provides the Giga Alert and Siteliner services. Use of all Copyscape services is subject to the terms and conditions of use.

Copyscape uses Google and Yahoo! as search providers, under agreed terms. Copyscape performs post-processing of the search results received from these providers. More details...

For additional information, please see the frequently asked questions. You can also read press coverage of Copyscape or user testimonials from people like you.

Please feel free to contact us at any time with questions, comments or suggestions.


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