Text Diff
Your text never leaves your device — the comparison runs entirely in your browser.
What this tool does
Compares two texts line by line with the same algorithm git uses and shows the minimal set of added and removed lines. The downloadable patch is real unified format — three context lines, standard hunk headers — so it applies directly with git apply or patch, not just a picture of a diff.
Why local matters here
The texts people diff are contracts, code and unpublished drafts — exactly what should not travel to a stranger's server. This page is static and keeps working with the network disconnected, verified by our automated tests on every release.