Text Difference Checker
⚡ Runs locally🔒 No uploads🆓 Free, no sign-up
Two drafts and you can't spot what changed? Paste the original and the revised version side by side — added and deleted lines are highlighted automatically as you type.
Handy for contracts, essays, translations and config files. Your texts never leave your device.
How to use
- Paste the original text on the left and the new version on the right
- Differences are highlighted automatically, or click “Compare”
- Review added (green) and removed (red) lines
FAQ
Does it compare line by line or character by character?
It diffs line by line, highlighting added and removed lines. Minor edits within a line show the whole line as changed.
Can I ignore whitespace differences?
Yes — enable the option to ignore leading/trailing whitespace and blank lines before comparing.
Are my texts uploaded?
No. The comparison runs 100% locally in your browser.