Text Difference Checker
Compare two pieces of text and see exactly what was added, removed or changed between them.
Spotting what actually changed
When two versions of something look almost identical, finding the difference by eye is slow and unreliable. This lines the two texts up and highlights every change — what was added, what was removed, what was edited — so a reworded paragraph, a changed clause or a single altered number jumps straight out at you.
Paste the old version and the new one, and the differences are marked for you.
Where a diff earns its keep
It is the fast way to compare two drafts of a document, check what someone edited in a contract, confirm two supposedly-identical files really match, or review a change to code or configuration. Rather than trust that nothing else moved, a diff proves it — showing you the exact changes and, just as usefully, confirming everything else stayed the same.
Questions & answers
What does it highlight?
The additions, deletions and edits between the two texts, so you can see precisely what changed.
What can I compare?
Any two pieces of text — document drafts, contract versions, config files, code, or plain notes.
Is my text uploaded?
No. The comparison happens in your browser.