Differences: 1 added, 1 removed
The quick brown fox jumps over the lazy dogThe quick red fox jumps over the sleepy dog and runs away
Runs entirely in your browser. Nothing you enter is sent anywhere.
How to use Text Diff Checker
- Paste the original text on the left and the changed text on the right.
- Choose to compare by line or by word.
- Added text is highlighted green and removed text red.
Frequently asked questions
How does the comparison work?
It finds the longest common sequence of lines or words and marks everything outside it as added or removed.
Is there a size limit?
Each side is limited to about 2,000 lines or words so the page stays responsive.
Is my text private?
Yes. The comparison runs entirely in your browser.