Paste two versions of a document, contract or code file to see exactly what changed. Differences are highlighted by line and by word, side by side or inline.
Free, no sign-up
Runs locally in your browser
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Your files are processed on this device and are never uploaded to a server.
How to use the Text Compare (Diff Checker)
1
Paste the original on the left and the changed version on the right.
2
Choose side-by-side or inline view.
3
Review the highlighted changes.
Options
Ignore whitespace and case differences to focus on meaningful changes. Word-level highlighting shows exactly which words changed within a line.
Frequently asked questions
Is my data sent to a server?
No. Everything runs in your browser as you type. Nothing is uploaded or logged, so it is safe to paste API responses, tokens and private text.