Text diff checker
Paste two versions of any text and instantly see what was added and removed, line by line. Runs entirely in your browser.
Press Compare to see the differences.
What a diff checker is for
A diff (difference) checker compares two pieces of text and shows exactly what changed between them — which lines were added, removed or edited. Developers use it to review code changes; writers and students use it to compare drafts, contracts or essays. This one works line-by-line and runs entirely on your device, so even confidential text stays private.
Is my text uploaded?
No — the comparison happens in your browser. Nothing is sent anywhere.
Does it handle large texts?
Yes, within your browser's memory — it comfortably compares typical documents and code files.