Plagiarism Detector

Identify potential plagiarism across nearly every language, detect AI-generated content, and confirm authenticity and ownership with the Copyleaks Plagiarism Detector.

Trusted by leading organizations and institutions:

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Plagiarism Detector report

Plagiarism Has Evolved,
So Should Your Detection

We use advanced AI to detect even the slightest variations within the text, including hidden characters, paraphrasing, and AI-generated content.

Take it beyond word-for-word detection with the only platform that:

Plagiarism Detector report

What You're Getting

AI-Generated Content Detection

With 99.12% accuracy, the only enterprise solution designed to detect whether content was written by a human or AI—including ChatGPT4—across multiple languages including English, French, Spanish, German, Italian, Russian, Polish, and several others.

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Scheduled Recurring Scans​

New content is being created at an unprecedented rate; stay on top of how yours is being used with recurring scans that automatically keep your content safe from potential plagiarism or unlawful duplication, adding a new layer of protection for your content.

Source Code Plagiarism Detection

Copyleaks is the only platform that can check source code for originality and in multiple code languages, including JAVA, Python, C++, and more.

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Unprecedented Search Results​

Along with the ability to read over 100 human languages, each scan searches across trillions of pages of original content, along with:

  • 60 trillion websites
  • 1M+ internal documents
  • 16,000+ open-access journals
  • 20+ code data repositories
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Cross-Language Plagiarism Detection

Supporting over 30 cross-language scans, you can scan a document in English and find plagiarism matches in Chinese, German, and Portuguese.

File Comparison Tool​​

Compare two files against one another to ensure originality and prevent accidental plagiarism.

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In-Depth Site Comparison

SiteCompare lets you thoroughly compare two sites for potential content lifting, copyright infringement, multiple forms of plagiarism, and much more.

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A Reporting Experience Like No Other​

Every scan gives you a clear, comprehensive, interactive similarity report. Plus, you can download and even choose to share the findings report. It’s all up to you.

Build Your Team​

Invite individual members or an entire department from your organization, set up unique scan profiles, view and share Similarity Reports, and more.

Grant Full Access ​

Collaborate without being limited. Invite colleagues, clients, or classmates and share all of Copyleaks’ capabilities with them under one secure account.

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Military-Grade Security

With military-grade 256-bit encryption and SSL connection, your content and account are always safe and secure. And since Copyleaks is a fully self-service platform, only you have control over your account and those you share it with, which is never exposed to third parties or other users.

Get Plagiarism Detection Where You Need It


Individual Use

A student or freelancer? Start using the Copyleaks Plagiarism Detector today for free!


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For Enterprise Use

Need detection for your business? Harness the power of the Copyleaks Plagiarism Detector right from your native platform with seamless API integration.

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For Educational Institutes

In education? Our simple LMS integrations allow you to scan essays, physical assignments, and more within your learning management system.

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Copyleaks' tools give us an opportunity to help teachers save precious time that they can utilize to provide more personalized instruction to students while helping them understand the importance of academic integrity.

Kinsey Rawe, SVP & GM,Courseware & Instructional Services for Imagine Learning.

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