🛡 PII / Secret Masker
Automatically detect and mask emails, phone numbers, IPs, credit cards, JWTs, AWS keys, Bearer tokens and other secrets in text. Useful for cleaning logs and screenshots before sharing.
✅ 100% free · no signup · text is never uploaded or stored
🔒 About Privacy (Important)
- ・Because this tool handles secrets, all detection and masking runs entirely in your browser (JavaScript)
- ・Input text and detection results are never sent to any server
- ・You can verify there is no network traffic in the Network tab of your developer tools
- ・No storage logs, no history, no database
Detected items (0)
Masked text
📖 How to Use
-
1
Paste textPaste a log line or text from a screenshot into the input area.
-
2
Choose detection types and methodToggle the categories you want, then pick a mask method (stars, partial, remove, or label).
-
3
Detect and maskClick the button to see the list of detected items and the masked output. Use Copy to send it to your clipboard.
❓ FAQ
Is the text sent to your server?
No. All detection and masking runs in your browser via JavaScript. Because this tool handles secrets, no network traffic is generated at all. You can verify in the Network tab.
How accurate is credit card detection?
We apply the Luhn checksum to 13–19 digit sequences, so false positives are low. However, unusual formatting (separators or spaces) may prevent detection.
Which is safer: partial or full mask?
Full masking (stars or remove) is safest. Partial masking is convenient for debugging when you want to keep things distinguishable, but for highly sensitive items (cards, tokens) use full masking.