Text Diff

Compare two texts

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LinesWords

This all happens on your device. Nothing you type or add is sent anywhere. Check it yourself

Are my texts sent anywhere?

No. The comparison runs in this tab, and the page's security policy blocks it from sending data anywhere.

Lines or words?

Lines suits code and lists. Words suits prose, where a sentence changes by a word or two.

Runs	In your browser. Your files stay on your device.
Engine	jsdiff 9 (BSD-3-Clause), in your browser
Modes	By line or by word
Works offline	Yes, once the page has loaded
Licence	AGPL-3.0
Added	27 September 2026
Built by	Sapience Design
Source	tools/text/text-diff