COPYLEAKS Plagiarism Checker

Detect plagiarism and paraphrased content using advanced
AI technology. Confirm originality with sophisticated algorithms
that scan and track textual content in every language.

Check educational content for plagiarism and ensure
authenticity. Keep your students’ academic integrity a
priority. Confirm your work is original before submission.
Feel certain that your work does not contain plagiarism.
Track textual content distribution, protect your
copyrights and secure your internal documents. See
where your content is being used and protect your
intellectual property. Know that your content is original
and avoid infringement.

Identify Paraphrased and Similar Content

Advanced artificial intelligence technology is able to detect even highly paraphrased and rearranged similar content. See exactly where text is similar and related so you know if the work is original.

Plagiarism Spectrum
Our Features Comprehensive and easy-to-use technology
Plagiarism Checker
Plagiarism Checker
Our plagiarism checker is the best service to check for business or academic plagiarism online. Through cloud computing, we find copies of your content throughout the internet. Our sophisticated search engine scans more than 60 trillion pages of the internet and databases. We support many file formats (doc, pdf, html, txt and more) in any language.
Copyleaks API
Copyleaks API
Easily integrates with existing systems for an automatic, and customized content scan. Check your organization’s content as part of your internal processes or add a content authentication layer to your current product. Schedule routine scans to be updated if your content is being used elsewhere around the web.
Your content security is important to us. Copyleaks uses an encrypted connection (SSL) ensuring that your account’s content is secured. Our priority is keeping your content safe while preventing infringement from occurring in the future
More Services Scan your content with our apps
  • Android
  • iOS
Copyleaks Mobile App
Enables scans of documents including physical content, by simply spapping a picture, for on-the-go review.
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  • Microsoft Word
Copyleaks for MS-Word
Check Microsoft Office Word documents for plagiarism and receive results automatically from within the documents.
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  • Comparison Tool
Comparison Tool
Compare documents to one another for free and get a full report showing the similar passages.
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Copyleaks provided a quick and detailed analysis of an article I was editing for a client and confirmed my initial suspicion that the article had been largely "lifted" from somewhere else! It saved me a tremendous amount of Googling specific phrases.

I am using it because it is simple and easy to use, and is good at finding matches. I tried about 30 different ones, and this one was the easiest. Everything that I need is there and it all works reliably, so I am happy.

I found that it is easy to use, the results are quick and it seems to do its proper function. I think one thing that differentiated Copyleaks was the accuracy and I didn't need to wait long to see results compared to other checkers.