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Text Diff Checker
Paste two versions of any text to see exactly what changed — added and removed lines highlighted side by side. A private diff checker that runs entirely in your browser.
100% free · runs in your browser · nothing is uploaded.
Why use this tool
- 100% free, forever
- No sign-up or login
- Runs entirely in your browser
- Your files never leave your device
- Unlimited use, no watermarks
- Works on desktop and mobile
How to use Text Diff Checker
- 1
Paste the original text on the left.
- 2
Paste the changed text on the right.
- 3
Review the highlighted, line-by-line differences.
Paste two versions of some text and see a clear line-by-line diff of what was added and removed.
Frequently asked questions
Any text — code, config, prose, JSON, logs, and more.