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Text Diff

Compare two text blocks and see the differences.

Your files never leave your device

Free online text diff tool

Compare two versions of any text side by side. Paste the original on the left and the modified version on the right, then click Compare to see a highlighted diff.

Added lines are highlighted green, removed lines red, and unchanged lines remain neutral. A summary at the top shows the count of added, removed, and unchanged lines at a glance.

Everything runs locally in your browser using a standard LCS diff algorithm. Source code, documents, or any sensitive text never leaves your device.

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