Text Difference Checker
Compare two pieces of text and highlight the differences. See additions in green and deletions in red. Useful for editing and proofreading. Free.
How to use the Text Diff
Three diff modes
Line diff shows which entire lines were added or removed — useful for comparing documents and code files. Word diff highlights individual word changes within each line. Character diff shows the exact characters that changed — best for spotting typos and small edits.
Common uses
Compare two versions of an essay or document. Spot changes between a draft and a revision. Verify that a copy-paste didn't introduce errors. Compare two configuration files. Check if a text has been modified from the original.
Frequently asked questions
Is the Text Diff free to use?
Yes, the Text Diff is completely free. There is no sign-up, no account required, and no limit on how often you can use it.
Is my text private when using the Text Diff?
Yes, all text processing happens in your browser. Your text is not sent to any server and is not stored anywhere outside your device.
What devices does the Text Diff work on?
The Text Diff works on any device with a modern web browser — desktop, laptop, tablet, or phone. It is mobile-friendly and works offline once the page has loaded.