Text Diff / Compare

Compare two versions of anything — a document, a config file, a chunk of code — and instantly see what changed. The comparison uses a longest-common-subsequence diff, the same approach behind git diff.

How to use it

1. Paste the original text on the left and the changed text on the right.
2. Toggle Ignore whitespace and Ignore case if leading spaces or capitalization shouldn't count as changes.
3. Read the result: added lines are highlighted green with a +, removed lines red with a −, and unchanged lines stay neutral. The header shows the total added and removed counts, or an "Identical" badge when the two match.

Privacy

Everything is computed locally in your browser — neither text is uploaded anywhere.