Compare Text
Spot every difference between two blocks of text, line by line.
Original
Changed
Both texts are compared in your browser — nothing is sent to a server.
How to Compare Text
- 1
Paste both versions
Put the original text on the left and the changed text on the right.
- 2
Compare
Click Compare — added lines are green, removed lines are red.
- 3
Review
Scroll the line-by-line diff to see exactly what changed.
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Compare Text — frequently asked questions
Does it compare word by word or line by line?+
Line by line, using a longest-common-subsequence diff — the same approach code review tools use.
Is there a size limit?+
It handles typical documents easily. Very large inputs (tens of thousands of lines) may be slow because the diff is computed in your browser.
Is my text uploaded?+
No. Both versions are compared locally and never sent anywhere.
Do you upload my files to a server?+
No — every tool here processes your files entirely on your device, and nothing is uploaded to a server. The only exception is the AI tools, which send the extracted text (not the file) to Claude to do their work.
Is there a file size limit?+
There's no artificial limit we impose, but since processing happens in your browser, very large files (500+ MB or 1,000+ pages) are limited by your device's memory rather than by us.
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