Text Diff Comparison
Compare two texts side by side and see the differences highlighted. All processing happens locally in your browser.
How to Compare Text Differences Online?
Paste Original
Enter the original text in the left panel. This is your baseline for comparison.
Paste Modified
Enter the modified text in the right panel. Choose character, word, or line comparison mode.
View Differences
Instantly see additions (green) and deletions (red) highlighted. Get statistics on changes made.
Why Use BrowserKits Text Diff?
100% Client-Side
All text comparison happens in your browser. Your documents never leave your device.
Multiple Diff Modes
Compare by character, word, or line. Choose the granularity that works best for your use case.
Clear Visual Output
Color-coded additions and deletions make it easy to spot exactly what changed.
Completely Free
No limits, no registration, no hidden fees. Compare unlimited text files.
Frequently Asked Questions
Is my text sent to any server?
No, all text comparison happens entirely in your browser. Your documents never leave your device - safe for comparing sensitive code, contracts, or confidential documents.
What's the difference between diff modes?
Character mode shows every single character change. Word mode groups changes by words (best for prose). Line mode compares entire lines (best for code or structured text).
Can I compare large files?
Yes, the tool handles large text files limited only by your browser's memory. For very large files, line mode provides better performance than character mode.