Diff Checker
Compare two texts side-by-side with clear line & word highlighting.
- No upload
- Browser-based
- Free
- No signup
- Text
Runs in your browser. Your text never leaves your device.
Frequently asked questions
- Is my text uploaded anywhere?
- No. Diffing happens entirely in your browser — nothing is sent to a server.
- What kind of diff is it?
- A line-based diff (like `git diff`), with word-level highlighting inside changed lines to show exactly what shifted.
- Is there a size limit?
- No hard limit, but very large inputs (100K+ lines) may be slow because all processing runs on your device.