Copyscape is a free plagiarism checker. The software lets you detect duplicate content and check if your text is original.

An overview of Copyscape's products, including Copyscape Premium and Copysentry.

Copyscape provides the world’s most powerful and most popular online plagiarism detection solutions, ranked #1 by independent tests. Copyscape is trusted by millions of website owners to check the …

Site owners can use Copyscape Premium to track down plagiarism of your site's content. By finding unauthorized copies of your content, you can protect your intellectual property and preserve your …

Copyscape is the global industry standard trusted by millions of website owners to check the originality of new content, prevent duplicate content, and search for copies of their content online.

Free comparison of two web pages or pieces of text, powered by Copyscape's technology.

Copyscape helps you protect your site against the threats of online plagiarism. The free Copyscape service provides online copyright protection by allowing you to easily search for plagiarism and …

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Copyscape provides a free service that lets you easily search for plagiarism online and identify instances of content theft. Simply type in the URL of your original content, and Copyscape does the rest.

Welcome to Copyscape Premium The world's most advanced plagiarism checker Check the originality of content before publishing it online. Paste text directly into the search box, or upload your files. See …