About the Text Diff Checker
Paste an original and a changed version to see every difference highlighted — additions in green, deletions in red.
Text Diff Checker
Compare two texts and highlight what was added and removed, word by word or line by line.
- Type or paste your text
- Choose what to do
- Copy the result
Runs in your browser. Your data and files never leave your device.
Frequently asked questions
Is my text uploaded?
No, the comparison runs entirely in your browser.
Word or line comparison?
Word mode is best for prose and edits within sentences; line mode suits code, lists and configuration files.
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