DiffDuo

Free online text compare and diff checker. Compare two texts, files or code and see every added, removed and changed word side by side. Nothing is uploaded. Paste or open the original Put the first version in the Original text box. You can paste text, or open or drag and drop a file. Add the changed version Put the second version in the Changed text box. The comparison runs automatically as you type. Review the differences Removed lines are red, added lines are green, and the exact words that changed are highlighted inside each line. Read changes in two columns, or switch to a single-column unified diff exactly like git diff .