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Plagiarism detection tool

More content is being plagiarized and AI generated than ever before – ChatGPT, other large language models and internet sources make this possible.
Our tool analyzes texts, automatically extracts their unique characteristics, and finds matching web sources. Such text signatures are difficult to falsify, so even this basic check efficiently exposes the more audacious cheaters. Read on below to learn how to interpret the results.

-> Learn more about our brand new S³ – Technology. Designed to detect AI-Paraphrasing. Only available for registered users

This interpretation only works if the document had regular saving points (i.e., auto-save was active) while it was written; otherwise, copying the text into a fresh .docx file removes this metadata, making the analysis meaningless.

Got your word file stores in MS Drive or Google Drive? Try our Version History Tool to track the evolution of your documents

To get the best possible analysis, start using Mentafy from begining of your project. Read More

FAQs about Plagiarism Software

How do I interpret a similar web source finding?

The URL(s) listed are semantically related to the checked text snippet. They might have content around the same topic and this can be coincidental. If the texts closely resemble each other, they might be pharaphrased versions.

What does a deep search plagiarism match indicate?

The text snippets in italics that follow after the source URL have been matched. That means these words have been found identically on the target web page. "..." is used to show text parts that did not exactly match, which could be the result of paraphrasing.

What is the difference between classic plagiarism and para-plagiarism?

Traditional plagiarism copies text verbatim or almost verbatim. Para-plagiarism occurs when content, arguments, or structures are taken over but completely reworded — so that no wording matches anymore, even though the intellectual work is still not the author’s own.

Can S³ also distinguish between permissible paraphrases with proper citation and para-plagiarism?

S³ identifies semantically similar passages and displays the likely source. Whether a citation is present and correctly formatted is checked in parallel by the reference module. By combining both signals, a properly cited paraphrase can be clearly distinguished from para-plagiarism.

May I use an S³ match as the sole basis for sanctions?

No, and we explicitly do not recommend that. S³ provides a signal and a basis for discussion. Sanctions should always be based on the conversation with the student, the full integrity report, and the institution’s established process.

Does S³ only work in English?

S³ supports multiple languages. For German, Spanish, and English, we have developed a language-specific model that delivers more reliable results than a generic approach. Additional language upgrades will follow.

What happens if I only have the final PDF — and no writing process data?

S³ and the plagiarism check work exclusively on the final text and do not require any process data. Version analysis is an additional module that provides more context, but it is not a prerequisite for an integrity review.

How does Mentafy integrate with our LMS?

Mentafy offers straightforward integration with common learning management systems. Contact us for details.

Is there a trial option before taking out an institutional subscription?

Yes, you can register for Mentafy free of charge and test the para-plagiarism detection directly with your own texts. No credit card, no automatic subscription.

Is Mentafy GDPR and CCPA compliant?

Yes. Mentafy is fully GDPR- and CCPA-compliant. Only the data necessary for the review process is processed. You can find further details in our Privacy Policy.

How to get better analysis?

Register and work with Mentafy from the beginning of your writing, because

We Protect

We will generate a concise report with indicative thresholds, which allows you to judge authenticity within a few minutes and generate a concise report with indicative thresholds, which allows you to judge authenticity within a few minutes.

We Organize

We provide the authors with writing support from the first steps of finding a topic until the final submission. Most importantly, real-time feedback for the students, encouraging them to work diligently and honestly.

We Guide

We track document changes reliably (Note: Even if you move text around within a document, we keep the information, how it came in originally) We are not keyloggers, and we respect our users privacy.