Launch period: all checks are free
OpenPlag Labs

Similarity and writing checks for academic texts

Upload a paper, an assignment, a thesis or a book, and get a report that shows side by side which passages resemble texts in open academic databases. AI use is assessed under a published ethical code: whether the author met their obligations, not how much a tool was used.

The service is in its launch period and is provided free of charge, as is, without any liability on our part for its use or its results, to the extent the law permits. Changes and faults may occur during this period. Registering, uploading files and using the service constitute acceptance of the Terms of Service and the Privacy Policy.

A real report: the ethical code itself, checked by the system. It was written with the help of AI, and the use is disclosed at its end.

A real report: the ethical code itself, checked by the system. It was written with the help of AI, and the use is disclosed at its end.

How it works

  1. 1

    Upload a file

    PDF, Word or text, up to 30 MB. Scanned files too.

  2. 2

    Wait a few minutes

    The document is checked against open academic databases and a local OpenAlex index.

  3. 3

    Get the report

    Side-by-side matches, citation and reference list checks, a writing indicator and a check under the ethical code.

Who it is for

Students and researchers

Check an assignment, a paper or a thesis before submitting it, and make sure every citation is in place and the reference list is complete.

Lecturers and teachers

Get evidence to review instead of a black-and-white score, and judge AI use by clear obligations.

Libraries, archives and editors

Check manuscripts, publications and collections in Hebrew, Arabic, English, Russian, French, Spanish, German and Chinese.

Why trust us

During the launch period every check is free

Check a document free