Diff Checker

Compare two texts and find differences

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What is a Diff Checker?

A diff checker compares two blocks of text and identifies the differences between them. It’s useful for code reviews, document version tracking, and finding changes between file versions.

How to Use

  1. Paste original text in the left panel
  2. Paste modified text in the right panel
  3. View differences highlighted automatically
  4. Added lines are shown in green, removed in red

Frequently Asked Questions

How does the diff checker work?

The tool compares two texts line by line, highlighting added lines (green), removed lines (red), and unchanged lines. It uses a longest common subsequence algorithm for accurate results.

Can I compare code?

Yes. The diff checker works with any text including source code. It preserves whitespace and indentation for accurate code comparison.

Is my data safe?

Yes. All comparison happens in your browser. No data is sent to any server.