What does the tool highlight?

It marks added, removed and changed parts so differences are easy to see.

Can I compare long documents?

Yes. Paste sizeable blocks of text and the diff is computed in your browser.

Is my text kept private?

Yes. The comparison runs locally and nothing is sent to a server.

Comparer

String Diff

Visually compare two strings or documents and see changes instantly.

View Mode

Source Text

Input Character Count: 0

Replaced Text

Input Character Count: 0

Enter text in the text editors above to see the diff.

Text Diff & Compare Tool

Visually compare two strings or documents and see exactly what changed. Differences are highlighted line by line so you can spot additions, deletions and edits at a glance.

How to use

Paste the original text into the first panel.
Paste the version you want to compare into the second panel.
Review the highlighted differences instantly.
Use the result to confirm or refine your changes.

Frequently asked questions

What does the tool highlight?: It marks added, removed and changed parts so differences are easy to see.
Can I compare long documents?: Yes. Paste sizeable blocks of text and the diff is computed in your browser.
Is my text kept private?: Yes. The comparison runs locally and nothing is sent to a server.