Text Diff Checker
Paste two versions of a text and see line-by-line changes with word-level highlighting. Runs entirely in your browser.
+3 added−2 removed
1
1
Roses are red,
2
− Violets are blue.
3
− Diff tools are handy
2
+ Violets are purple.
3
+ Diff tools are extremely handy
4
4
and this one is too.
5
5
6
+ A brand new line appears here.
6
7
Unchanged trailing line.
Line diff uses a longest-common-subsequence algorithm; changed line pairs are re-diffed word by word. Long unchanged stretches are collapsed. Nothing leaves your device.