Tool

Text Diff

See the differences between two texts at line or word level. Review them side by side or unified; optionally ignore whitespace and case.

Runs in your browser — no data is sent to the server.

Original text (A)

Changed text (B)

Ignore whitespace Ignore case Only changes (3 lines of context)

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Shortcut: in a text box press Ctrl + Enter.

The Myers diff algorithm finds the shortest edit. Even texts of several thousand lines compare instantly; for huge, very different texts there is a 3-second limit.
In line mode, the changed words inside each changed pair of lines are highlighted as well.