Web & SEO Tools ›
Diff Checker
Compare two pieces of text line-by-line and see what was added or removed - colour-coded, in your browser.
Private - runs in your browser
No signup required
Free forever
How to use Diff Checker
- Paste the original text on the left.
- Paste the new version on the right.
- Click Compare.
Features
- Line-level diff
- Added / removed highlighting
- Browser-side
Why use it
- Spot accidental edits
- Compare config files
- QA copy changes
Frequently asked questions
Does it support large files?
Up to a few MB is fine. For huge files, use a desktop diff tool.