Question 1

What does this tool detect?

Accepted Answer

It detects credit card numbers (Visa, MasterCard, Amex, Discover, JCB, Diners), CVV codes, US Social Security Numbers, and phone numbers in arbitrary text.

Question 2

Is my data uploaded anywhere?

Accepted Answer

No. All masking runs locally in your browser. The tool never sends your input to any server, log service or analytics endpoint.

Question 3

What does the masked output look like?

Accepted Answer

By default, all but the last 4 digits are replaced with • characters (e.g. 4111 1111 1111 1234 → •••• •••• •••• 1234). You can fully redact, keep last 4, or hash the value via the options.

Question 4

Is this safe for PCI compliance?

Accepted Answer

This tool helps you redact sensitive info from screenshots, demos and logs so you don't accidentally share card numbers. It is NOT a substitute for full PCI-DSS controls.