Text Diff Compare

Compare two blocks of text line by line and see exactly what was added and removed.

Privacy: This tool runs entirely in your browser. Your data never leaves your device and is never uploaded to any server.

Original

Modified

+0 added−0 removed

Frequently asked questions

How does the comparison work?

The two texts are split into lines and compared using a longest-common-subsequence algorithm.

What do the colors mean?

Green lines were added, red lines were removed, and uncolored lines are unchanged.

Is my text uploaded?

No. The comparison happens locally in your browser.

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Read our full guide: How Text Diff and Comparison Tools Work →