Text Diff Checker
Compare two texts side by side.
- 100% free
- No sign-up
- Runs in your browser
Spot every change instantly
Paste an original and an edited version to see additions in green and deletions in red. It's ideal for checking edits to contracts, essays, code snippets or translations.
Compare word by word for prose or line by line for lists and code.
- 1
Paste the original
In the left box.
- 2
Paste the new version
In the right box.
- 3
Review the changes
Additions and removals highlighted.
Frequently asked questions
Does it compare files?
Paste the contents of text-based files (TXT, CSV, code). Word or PDF documents need their text copied out first.
Is whitespace compared?
In word mode spaces count, so you'll also see where extra spaces were added or removed.
Is my data uploaded anywhere?
No. Everything runs in your browser with JavaScript — nothing you type or open is sent to our servers.