Diff Checker
Compare two texts line by line.
How to use the Diff Checker
- 1 Paste the original text on the left and the changed text on the right.
- 2 Toggle "ignore case" or "ignore whitespace" if needed.
- 3 Read the highlighted additions, deletions and unchanged lines.
Examples
- ▸ Spotting what changed between two versions of a config file.
- ▸ Comparing two drafts of an article.
Frequently asked questions
Is my text sent to a server?
No. The comparison runs entirely in your browser, so code and documents you paste stay on your device.
How does the line diff work?
It uses a longest-common-subsequence algorithm to find the smallest set of line additions and deletions that turn the original into the changed text.