Text Diff Checker
Compare two texts side-by-side with color-coded differences. See additions, deletions, and unchanged lines.
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Frequently Asked Questions
How does the diff comparison work?▾
The tool compares text line-by-line. Lines present only in the original are shown as deletions (red), lines present only in the modified text are shown as additions (green), and matching lines are shown in gray.
Does it detect moved lines?▾
This is a simple line-by-line diff. Moved lines will appear as a deletion in the original position and an addition in the new position.
Can I compare code?▾
Yes, you can compare any text including source code, configuration files, logs, and more.
Is my data secure?▾
Yes, all comparison runs in your browser. No text is sent to any server.