Code Diff Checker
See exactly what changed between two versions of a file, like a code review.
Runs in your browser. Nothing is uploaded Free, no sign-up Works on mobile
Original
Changed
No differences.
How to use Code Diff Checker
- Paste the original and changed code.
- Choose side-by-side or unified view.
- Download a .patch file if you need one.
Frequently asked questions
Can I apply the patch with Git?
Yes. The downloaded unified diff can be applied with git apply or patch.
Is my code uploaded?
No. The comparison runs in your browser.
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