Diff checker
See which lines changed between two texts.
Compare two texts line by line in the browser. Added and removed lines are marked. Neither text is uploaded.
This stays in your browser. Nothing you type or drop here is sent to a server.
How to use this calculator
- Paste the original and the changed text.
- Run. Matching lines stay plain. Removed lines and added lines are marked.
- Very long texts are refused so this tab does not run out of memory.
Questions
Diff checker: is the input uploaded?
No. The page reads and writes only in this browser. There is no account and no server round trip.
What should I check before trusting the result?
Compare two texts line by line in the browser. Added and removed lines are marked. Neither text is uploaded.