How to use
- Paste your original text in the left box
- Paste the changed text in the right box
- Read the diff below, green is added and red is removed
Frequently asked questions
Is my text uploaded anywhere?
No. The comparison happens entirely in your browser using JavaScript, so nothing ever leaves your device.
How does it compare the texts?
It compares line by line, marking each line as unchanged, added (+) or removed (−).
Does it update automatically?
Yes, the diff refreshes as you type, and you can also press Compare to recompute it.
About this tool
Compare two blocks of text line by line and highlight added and removed lines. Runs entirely in your browser, so your text stays private.