Free Data Anonymizer - Mask Emails, IPs, Credit Cards & Sensitive Data
Mask sensitive data in text, logs, or CSV instantly. Use built-in patterns for emails/IPs or define custom Regex rules.
Data Anonymizer
Configuration
Input Data
Ready to Mask
Paste your text and click Mask Data to anonymize sensitive information
Protect Sensitive Data
Need to share a log file or a dataset but worried about privacy? Our Data Anonymizer automatically masks emails, credit card numbers, IP addresses, and more. Everything is processed in your browser—no data leaves your device.
Masking Features
Auto-Detect PII
One-click masking for Emails, IPv4, Credit Cards, and IBANs.
Custom Regex
Define your own patterns to mask specific IDs, tokens, or names.
Flexible Output
Replace data with asterisks (****), hash (#), or a custom [REDACTED] tag.