Text diff — compare two texts

Paste two versions of a text to see what changed — removed lines are marked in red, added lines in green, unchanged lines stay plain. It is handy for config files, copy revisions or code snippets, and it runs entirely on your device.

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Text diff — compare two texts

Compare two texts line by line

Original
Changed
Diff
Output appears here…

0 bytes of your file have left this device. Counted live in this tab, not claimed — open your browser’s Network tab and watch.

How it works

  1. 1

    Paste the original on the left, the changed version on the right.

  2. 2

    Added lines show green, removed lines red.

  3. 3

    Copy the diff — both texts stay on your device.

Frequently asked questions

Is it line-based or character-based?

This is a line-by-line diff — it shows which whole lines were added or removed, which is ideal for config and prose.

Is my text uploaded?

No. The comparison runs in your browser, so both texts stay private.