Detect personal-data patterns in text

Detect and anonymize sensitive patterns such as email, phone, IBAN, Spanish DNI/NIE, cards, IP, MAC, JWT, API keys and other identifiers without sending the text.

✓Local processing in this tool

The sample replaces the text in the field. It uses a reserved example email and documentation IP address, showing why you still need to inspect names and postal addresses.

Features

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Specific patterns

Combines patterns with validators such as Luhn, IBAN mod-97 and Spanish DNI/NIE checks when applicable.

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Local text

The text is analyzed in your browser.

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No anonymization guarantee

A zero result does not mean the text is free of personal information.

What it is for

It can help catch obvious oversights before you paste text into another app or publish it. It does not replace human review or a legal assessment of anonymization.

Before copying the result

A match list is only the first check. Look for names, postal addresses, health details, references to people or clues that could indirectly identify them. Automatic replacement is limited to detected patterns; it does not demonstrate that the resulting text is anonymous.

Read the step-by-step guide before sharing text

Frequently asked questions

Does it detect names or postal addresses?

Not reliably, so we do not claim that it does. The current version is limited to specific patterns it can recognize deterministically.