Text similarity tool

Duplicate Content Checker

Find repeated and substantially similar passages inside one document with transparent similarity evidence and no internet upload.

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The checker compares passages within this text, not against the internet.

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How to use this tool

Paste or upload the document, choose the comparison settings and run the check. Review each exact or near match before deciding whether repetition should be removed.

What to check

The stated scope is comparison within the supplied document. It is not an internet-wide plagiarism scan or a determination of copyright ownership.

Is every repeated passage a problem?

No. Definitions, quotations, methods and required terminology can repeat legitimately. Evaluate the purpose and attribution before revising.