Text diff checker
Compare two texts and highlight the differences free in your browser — by line, word or character. 100% private, no upload, no sign-up.
100% private — files never leave your deviceOriginal
Changed
How to use
- Paste both versions. Put the original text on the left and the changed text on the right.
- Choose granularity. Compare by line, word or character depending on how fine you need the diff.
- Tune the comparison. Optionally ignore case or whitespace to hide trivial differences.
- Review the result. Added text is highlighted in green and removed text in red.
Features
- Line, word or character. Pick the diff granularity that suits your text and changes.
- Clear highlighting. Additions and deletions are colour-coded so changes are obvious at a glance.
- Ignore case or whitespace. Focus on meaningful changes by ignoring formatting differences.
- Change summary. See how many segments were added and removed.
- Nothing leaves your device. Both texts are compared locally and never uploaded.
When to use it
- Compare two drafts of an article or email to see edits.
- Spot changes between two versions of code or config.
- Check what a collaborator changed in a document.
- Diff two lists to find added or removed entries.
- Verify a copy-paste matches the original exactly.
Is it private?
Both texts are compared locally in your browser and are never uploaded.
Frequently asked questions
Is this diff checker free?
Yes, it's completely free with no sign-up and no limits.
Is my text uploaded anywhere?
No. Both texts are compared locally in your browser and are never uploaded.
Can I compare by word or character?
Yes. You can diff by line, word or character for as coarse or fine a comparison as you need.
Can I ignore case or whitespace?
Yes. Toggle the options to ignore case or whitespace differences.
Does it work for code?
Yes. Line and character diffs work well for code and config files.
Do I need to install anything?
No. It runs entirely in your web browser with nothing to install.
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