Text Diff Checker

Compare two pieces of text side by side and see what was added, removed, or changed.

Ignore case Ignore whitespace

Original

Hello world
This is line two
This is line three

Modified

Hello there
This is line two
This is the new line three

Diff result

Features

Side-by-side view

Color-coded diffs

Inline diff marks

Ignore whitespace option

1. Paste the original text into the left panel.

2. Paste the modified text into the right panel.

3. Differences are highlighted automatically: green for added, red for removed.

How does the diff algorithm work?

It uses a line-by-line comparison algorithm to identify additions, deletions, and unchanged lines.