Similarity Checker

A proper similarity checker for single and cross-language that takes into account translations and more than 100 billion writings worldwide.

How it works

The most advanced and powerful plagiarism checker in the market!

Upload your document.

Crossplag™ supports the following file types: Microsoft Word, PDF, Rich Text, Plain Text, and PTT.

Single Language Analysis

Single Language Analysis identified similarities of the document agains all available sources based on the document language. Similarities are then classified as highly identical, possible altered text, and cited text.

Cross Language Analysis

Cross Language Analysis or Translation Plagiarism Analysis identifies similarities of a document across two languages by translating the document content from original to target language. Translated contend then is used to conduct further similarity analysis. Similarities are then classified as highly identical, possible altered text, and cited text.

Similarity Report

The Similarity Report presents similarities of a document with every other document available for checking based on user access rights.


Crossplag™ offers detailed analytics for the educational institution by providing an overview panel with main insights and data regarding plagiarism prevention and user activities.

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Access to Content

Third-party Open Access Content available for you to check your documents against!
Scopus logo
Science Direct logo
Core UK logo
We're adding more continuously

Crossplag in numbers

+100 Languages supported

+300 Million Documents Archived

+100 Billion Web Articles for

Data Protection

You should own and control who has acees to your data!

GDPR Compliant

Data encryption

Data access rights

How the AI Content Detector works

Introducing our AI Content Detector

Try out our AI Content Detector for free and get instant results on whether a text is AI-generated or human-written.