Text Compare / Diff Checker
Compare two texts line by line. Free diff checker highlights added and removed lines in your browser. No signup.
Processed locally in your browser.
How to use this text compare
Paste the original on the left and the changed text on the right. A line-based diff marks deletions and additions.
Large files are capped so the page stays fast. This is not a binary or word-level Git diff, but it is enough for copy edits and config changes.
Example
If left is apple and right is orange, you will see apple removed and orange added.
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Frequently asked questions
Is this like Git diff?
It is a line-based LCS diff, similar in spirit, without hunk headers or file paths.
Can I compare JSON?
Yes. Format both sides with JSON Formatter first so the diff is readable.
Are the two texts uploaded?
Processed locally in your browser. We do not upload the text to compute a result.
Last reviewed 2026-08-19. Results stay on your device unless you copy them elsewhere.