Diff Checker
Compare two texts and see changes. Runs in your browser.
How to use
Paste the original text on the left and the changed text on the right, then press Compare.
Switch between side-by-side and inline views, and between line and word level, to see exactly what changed.
FAQ
Is my data sent anywhere?
No. This tool runs entirely in your browser. Nothing you type, paste or upload is sent to a server or stored anywhere.
Does whitespace count as a change?
Line ending differences (Windows vs Mac/Linux) are ignored. Other spaces count, since they can matter in code.