Paste an original and a revised text to see exactly what changed. Text Diff Viewer highlights added lines in green and removed lines in red, and reports the number of insertions and deletions — handy for reviewing edits, drafts and copy updates without installing anything.
Your data is processed entirely in your browser. Nothing is uploaded to any server.
Yes, it is free and private.
No. Your text stays on your device and is processed locally.
No account is needed.
Yes. Processing happens in your browser, so your text never leaves your computer.