Paste two versions of a text to see exactly what changed, with additions in green and deletions in red.

Loading the tool…

When to use it

Compare modes

Mode Best for
Words Most writing: shows changed words within sentences
Lines Lists, code and long documents
Characters Spotting typos and small edits like numbers

The comparison uses the same approach as developer diff tools (the Myers algorithm), finding the smallest set of changes that turns the original into the new version.

Frequently asked questions

Is there a length limit?

Very long texts are best compared by lines.

Does it compare formatting?

No, only the plain text.

Can I compare code?

Yes, use line mode.

Are my texts uploaded?

No, they’re compared in your browser.

Last updated: