Compare two texts and see exactly what changed — added and removed lines are highlighted. Nothing is uploaded; everything runs in your browser.
This text diff checker shows you exactly what changed between two versions of a document, piece of code, or article — without any of your content ever leaving your device. Paste the original version into the left box and the edited version into the right box, then click Compare. Lines that were removed appear highlighted in red, newly added lines in green, and within changed lines the exact words that were modified are marked as well. A summary at the top tells you how many lines were added, removed, and left untouched. You can swap the two inputs, clear both fields to start over, or copy the result as a unified diff — the standard format used by developers and version-control tools. It is a handy way to review edits, check what an editor changed in your copy, or verify that only the intended parts of a file were modified. No signup, no upload, no file limits.
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