Text Diff Checker

Compare two texts and find differences online. Line-by-line diff with added, removed, and unchanged highlighting.

OriginalDrop file on left

ModifiedDrop file on right

How to Use

Paste the original text in the left panel
Paste the modified text in the right panel
Click Compare
Review highlighted differences — green for added, red for removed

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Frequently Asked Questions

How does text diff work?

It compares two texts line by line using the diff algorithm. Lines present only in the modified text are highlighted green (added), lines only in the original are red (removed).

Can I compare code?

Yes! The diff checker works for any plain text: code, configuration files, prose, or data.