Text Diff Checker
✓ Link copiedCompare two blocks of text and instantly see what was added and removed. Switch between a line-by-line view with numbered changes and an inline word-level view that highlights the exact words that differ. Perfect for reviewing edits, contracts, code snippets, and document revisions. Free, fast, and runs entirely in your browser; your text never leaves your device.
Enter text in both boxes to see the differences.
How to use
Paste your original text on the left and the changed text on the right. Additions are highlighted in green and deletions in red, with a running count of changes. Toggle between Line and Word granularity, use Swap to flip the two sides, Sample to try it out, or Clear to start over.
Frequently asked questions
- Is the text diff checker free?
- Yes. It's completely free, needs no sign-up, and runs entirely in your browser.
- What's the difference between line and word comparison?
- Line comparison shows each changed line as a whole, with original and new line numbers — ideal for code and structured text. Word comparison highlights the individual words that changed inline within the text, which is handy for spotting small edits in prose.
- Is my text uploaded anywhere?
- No. All comparison happens locally in your browser — your text never leaves your device.