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Mask sensitive data (emails, names, phones, SSNs, credit cards) in CSV, JSON, or SQL. Add custom regex rules for any pattern. All processing happens in your browser.
Anonymized output will appear here.
Data Anonymizer is a free privacy tool that masks sensitive information — emails, phone numbers, credit cards, IP addresses, and more — in CSV, JSON, or SQL data. Built-in rules cover common PII patterns, custom regex rules handle anything else, and optional realistic fake data keeps output format-valid for testing.
Yes. The Data Anonymizer is completely free with no signup and no usage limits, like all SqlInt mini tools.
Emails, phone numbers, SSNs, credit cards, and IP addresses out of the box, plus an opt-in heuristic for person names and custom regex rules for anything else.
Your choice: placeholders like [EMAIL], or format-preserving fakes (an SSN stays ###-##-#### shaped) that keep test data valid.
No. Every mini tool processes data locally in your browser — pasted text and uploaded files never leave your device.
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