Diff Checker
Compare two texts or code files side by side. See every changed character, jump between changes, and copy any change from one side to the other.
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How to use Diff Checker
- Paste the original text on the left and the changed text on the right, or open two files.
- Press Find difference. Removed text is red, added text is green, and changed characters are highlighted.
- Use Previous and Next (or Alt + ↑ / ↓) to jump between changes.
- Under the selected change, press Use left version or Use right version to copy that change across. Undo if you change your mind.
Your data stays with you
This tool runs entirely in your browser. What you paste or add is never uploaded to our server.