Diff Viewer
Compare two texts and see exactly what changed — line by line, with the edited words picked out inside each changed line.
Paste an old version on the left and a new one on the right. A line-level longest-common-subsequence finds what was added, removed and kept, and each changed line is refined by a second token-level pass so the highlight lands on the words that actually differ instead of colouring the whole row. Added and removed counts sit in the toolbar.
Switch between a split view, with the two versions aligned side by side, and a unified view that reads like a patch. Swap the sides in one click, or copy the result as prefixed diff text to paste into a review. It all runs in your browser — two files you would rather not upload to a diff website stay on your machine.
What people open it for
- Seeing what changed between two versions of a file or snippet
- Reviewing an edit with the changed words picked out per line
- Reading a change as a split view or as a unified patch
- Comparing two texts without pasting them into a website