Plagiarism Checker
See exactly which passages match across your documents.
Your text never leaves your browser.
Compare against sources you supply.
This tool compares your text against documents you supply. It does not search the internet. It is ideal for checking submissions against known sources, comparing draft versions and finding duplicate passages.
Text A
Text B (checked against A)
Add up to 20 plain-text documents (.txt, .md, .csv). Every pair is compared and scored.
Drag text files here, or
Up to 20 files, 2 MB each. Files stay on this device.
Text A
Text B
The Plagiarism Checker processes everything locally in your browser. Nothing is uploaded, tracked or stored.
Need fuzzy matching for messy data instead?
Flookup Data Wrangler brings fuzzy matching, phonetic matching and deduplication to thousands of rows inside Google Sheets.
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