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Diff Checker
Compare two texts and highlight every addition and deletion. Unified and side-by-side views. Everything runs in your browser.
Enter two texts to compare their differences
How to use
- Paste the original version of your text into the left box and the modified version into the right box.
- Press Compare. Added lines appear in green and removed lines in red.
- Toggle between Unified and Side by Side views using the buttons inside the results panel.
- Use Ignore case or Ignore whitespace to skip cosmetic differences, or Load Example to see a live demo.
What this is for
A diff checker lets you see exactly what changed between two versions of any text, whether that is source code, configuration files, documentation, or a contract. This tool runs a line-by-line comparison entirely in your browser, so nothing you paste is ever uploaded. It is useful for reviewing code changes without a version control system, auditing edits to a document, or debugging a configuration that stopped working after a change.
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