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Diff Checker
▸About this tool
Compare two texts or code blocks side-by-side. Additions are highlighted green, deletions red. Uses the Myers algorithm: same as Git.
▸Privacy and details
Your files never leave your device.
Fast browser processing with no account required.
Optimized for desktop and mobile with accessible controls.
▸How to use
- Paste the original text in the left panel.
- Paste the modified text in the right panel.
- Differences are highlighted instantly: green for added lines, red for removed lines.
- The summary shows total additions, deletions, and unchanged lines.
▸Why use this tool
Comparing versions of configuration files, code, or documents is a daily task for developers and writers. This tool provides Git-quality diffs instantly, without installing any software, running entirely in your browser.