Text Diff Checker
Compare two blocks of text and see added and removed lines highlighted.
About Text Diff Checker
Compare two versions of text line by line and instantly see what was added and removed, highlighted in green and red. Optionally ignore case or surrounding whitespace. The comparison runs entirely in your browser.
How to use Text Diff Checker
- 1
Paste the original text on the left and the changed text on the right.
- 2
Optionally ignore case or leading/trailing spaces.
- 3
Review the highlighted line-by-line differences.
- 4
Use the +/− counts to gauge the size of the change.
Frequently Asked Questions
How does the comparison work?
It uses a longest-common-subsequence line diff to find the minimal set of added and removed lines, just like version-control tools.
Is my text uploaded?
No. The diff is computed locally in your browser, so it's safe for private documents and code.