Is Diff Checker free?

Yes, completely free with no sign-up required.

This tool runs 100% in your browser. No data is sent to any server.

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Diff Checker

New

Paste two pieces of text and instantly see additions, deletions, and modifications highlighted line by line.

Original

Modified

What is Diff Checker?▼

Paste two pieces of text and instantly see additions, deletions, and modifications highlighted line by line.

Is this tool free?▼

Yes, Diff Checker is completely free. No sign-up, no limits.

Is my data safe?▼

100% safe. This tool runs entirely in your browser. No data is ever sent to any server.

How does Diff Checker work?▼

Diff Checker uses modern browser APIs to process everything locally. Nothing is uploaded or stored.