Diff Checker
Compare two texts and highlight differences. Free, no signup.
100% FreeNo SignupPrivate
Frequently Asked Questions
How does the Diff Checker work?▼
It compares two texts line by line. Added lines are shown in green, removed lines in red, and changed lines in yellow. A summary of changes is displayed at the top.
Can I compare large files?▼
Yes. The tool handles large texts efficiently in your browser. For very large files (10,000+ lines), there may be a brief processing delay.
What types of differences are detected?▼
The tool detects three types: lines that were added (only in the modified text), lines that were removed (only in the original), and lines that were changed (exist in both but differ).
Is my data safe?▼
Yes. All processing happens in your browser. No data is sent to any server.