Free Online Sensitive Data Masking Tool

The Sensitive Data Masking Tool automatically detects and hides private information in your text, including emails, phone numbers, and credit card details. It masks only the sensitive portions while keeping the rest of your text unchanged — perfect for sharing documents, publishing logs, or anonymizing data without risking privacy breaches.

Example:

Input: Contact me at john.doe@example.com or +1-555-123-4567. My card is 4111 1111 1111 1234.
Output: Contact me at ****@example.com or XXX-XXX-4567. My card is **** **** **** 1234.