Text Diff Checker
Compare two blocks of text and see exactly what was added and removed, line by line.
Runs entirely in your browser · nothing is uploaded · free & unlimited
Paste text into both boxes to see what changed, line by line.
How it works
- 1Paste your original text on the left and the changed version on the right — the diff updates as you type.
- 2We compare the two line by line using a longest-common-subsequence algorithm to find what actually moved.
- 3Removed lines show in red with a minus, added lines in green with a plus — copy the unified result if you need it.
Frequently asked questions
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