✍️ Text Tools
Text Compare / Diff Tool
Compare two texts side by side and see the exact differences highlighted. Perfect for spotting changes in documents, code, or content. Nothing uploaded.
🔥 Used 10,532 times this month
Original text
Changed text
Differences
Paste text on both sides to see differences
💡 Ctrl+D (Cmd+D on Mac) to bookmark for next time
How it works
01
Paste Both Texts
Original on the left, changed version on the right.
02
Set Options
Ignore case, ignore whitespace, hide unchanged.
03
See Diff
Green = added, red = removed. Live updates.
Frequently asked questions
How does the diff algorithm work?
We use the Longest Common Subsequence (LCS) approach to find the minimum set of additions and deletions. This is the same approach git and most diff tools use.
Can I compare code files?
Yes. Paste code from any language. The diff is line-by-line, which works well for source code, config files, and documents.
What is the maximum text size?
There is no hard limit, but comparing very large files (over 10,000 lines each) may slow the browser. For huge diffs use a dedicated tool like git diff.
Is my text uploaded?
No. All comparison runs in your browser. Your text stays on your device — important for sensitive documents.
All tools are free, browser-based, and process files locally — your data never leaves your device.
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