Text Compare and Diff Checker
Paste two versions of a text or file to see exactly what was added, removed or changed, line by line or word by word.
Nothing leaves your browser
How it works
- 1Paste both versionsThe original on the left, the changed one on the right, or open two files.
- 2Pick how to compareLines for code and lists, words for prose, characters for small fixes.
- 3Review or downloadLong unchanged stretches fold away. Download a .patch file of line changes.
Questions
Is my text sent anywhere?
No. Everything runs in your browser and nothing you type or open is uploaded, logged or saved. Your settings are remembered on this device; your text isn't.
What do the ignore options do?
Ignore case treats A and a as the same. Ignore spacing skips spaces at the start and end of each line when comparing lines, and differences in spacing between words when comparing words.
Is there a size limit?
Very large texts with many differences can take a long time to compare, so the comparison stops after 3 seconds and tells you. Comparing by lines is the fastest.