Is my text uploaded anywhere?

No. Diffing happens entirely in your browser — nothing is sent to a server.

What kind of diff is it?

A line-based diff (like `git diff`), with word-level highlighting inside changed lines to show exactly what shifted.

No hard limit, but very large inputs (100K+ lines) may be slow because all processing runs on your device.

Compare two texts side-by-side with clear line & word highlighting.

Original text Changed text

Ignore whitespace differences Ignore case

Runs in your browser. Your text never leaves your device.

Is my text uploaded anywhere?: No. Diffing happens entirely in your browser — nothing is sent to a server.
What kind of diff is it?: A line-based diff (like `git diff`), with word-level highlighting inside changed lines to show exactly what shifted.
Is there a size limit?: No hard limit, but very large inputs (100K+ lines) may be slow because all processing runs on your device.