Secret Mask Generator
Mask passwords, tokens, API keys and other sensitive values while keeping selected characters visible.
What is Secret Mask Generator?
Mask sensitive values before displaying or sharing logs, configuration data and text. Enter a secret, choose the masking character and control how many characters remain visible at the beginning or end of the value.
How to use
- Enter the sensitive value.
- Choose the masking character.
- Set how many characters should remain visible.
- Generate the masked value.
- Copy the masked result.
Features
- Custom masking character
- Keep leading characters visible
- Keep trailing characters visible
- Mask the entire value
- Configurable visible character count
- Copy masked values
- Browser-side processing
Common Use Cases
- Redacting API keys in logs
- Masking passwords in examples
- Preparing screenshots
- Sharing configuration safely
- Cleaning sensitive debugging output
- Sanitizing test data
Example
Secret: sk_live_51AbCdef123456789 Mask: * Visible at start: 3 Visible at end: 4
Masked value: sk_*************6789
FAQ
What can I use Secret Mask Generator for?
It can mask passwords, API keys, tokens, credentials and other sensitive values before displaying or sharing text.
Can I keep part of the secret visible?
Yes. You can choose how many characters remain visible at the beginning and end of the value.
Can I choose the masking character?
Yes. You can select the character used to replace the hidden portion of the value.
Does masking make a secret secure?
No. Masking is intended for display and redaction. It does not encrypt the original secret or make an exposed credential safe to use.
Is the secret sent to a server?
No. The masking operation is performed in the browser, so the entered value does not need to leave your device.
Missing a feature?
If this tool doesn't cover your use case or is missing functionality, please let me know through the Contact page.
New improvements and features are added based on user feedback.