Text toolLiveRuns on your device

Text Diff

Paste two versions of a text and see exactly which lines were added, removed or kept — computed locally in your browser.

Original

Changed

⌘ ⇧ C copy

Differences

Paste text into both boxes to see what changed, line by line.

How to use

FAQ

Yes — turn on “Ignore whitespace” to treat lines that differ only in spacing as unchanged.

No hard limit. Very large texts (tens of thousands of lines) may take a moment on slower devices.

No. The tool runs inside this browser tab. Your input is processed in memory on your device and is gone when you close the tab.