Data Masking Tool: Mask Emails, Phones & Card Numbers | Free
2 usesData Masking Tips
Auto-Detect & Mask
Automatically detects and masks email addresses, phone numbers, credit card numbers, and SSNs.
Customizable Mask Character
Choose any character (*, X, #, etc.) for masking sensitive data.
Selective Masking
Choose which data types to mask with individual checkboxes.
Client-Side Processing
All masking happens in your browser. No data is uploaded or stored.
Frequently Asked Questions
What data types can be masked?
Email addresses, phone numbers (US format), credit card numbers (16 digits), and SSN/ID numbers (XXX-XX-XXXX format).
Is my data safe?
Yes, all processing happens locally in your browser. No data is sent to any server.
Can I customize the mask character?
Yes, you can use any single character like *, X, #, or _ for masking.
Is this free?
Yes.
How can I mask sensitive data from a CSV file using this browser-based tool?
Even though this is a browser-based text tool, you can easily mask data from a CSV. Simply open your CSV file in a text editor or spreadsheet program, copy the column or rows containing sensitive information, paste them into the tool's input area, and click mask. The anonymized text can then be copied back into your CSV or used as needed for testing or sharing. This ensures your PII is protected.
How to Mask Data
- Paste text containing sensitive data
- Select which data types to mask
- Choose your mask character
- Click Mask Data and copy the result