🔍 Text Comparison & Diff Checker
Paste the original and the revised text to see exactly what changed: added and removed lines, or word-by-word edits inside each line.
✅ Free · No sign-up
How to use the Text Comparison & Diff Checker
- Paste the original version on the left and the edited version on the right.
- Choose line diff (best for scripts and lists) or word diff (best for paragraphs).
- Press Compare. Green shows additions and red shows deletions.
Example
- Input
- “Subscribe for weekly tips” → “Subscribe for daily tips”
- Output
- Word diff highlights
weeklydaily
Why creators use it
- Check what an editor or sponsor changed in your script.
- Compare two versions of a video description before publishing.
- Review changes in terms, contracts or brand guidelines.
Good to know
- Very large texts (over a few hundred thousand words) may be slow because everything runs on your device.
- The diff compares exact characters; use the ignore options for case and spacing changes.
Frequently asked questions
Is my text uploaded?
No. The comparison runs entirely in your browser.
Which algorithm is used?
The Myers difference algorithm, the same approach used by Git, applied to lines or to words.
Does it support emoji and non-Latin scripts?
Yes. Words are detected with Unicode-aware rules.