About Password Generator
Generate passwords from cryptographically secure browser randomness, with ambiguity controls and an entropy estimate.
The generator uses crypto.getRandomValues with rejection sampling, guarantees at least one character from each selected set, and shuffles the result. Its entropy figure is a mathematical estimate based on length and pool size.
How to use it
- Enter or select your source data.
- Adjust the available options and run the tool.
- Review, copy, or download the result.
Common use cases
- Create a unique password for a new account.
- Generate temporary high-entropy credentials for a secure handoff.
- Test password fields against long values and symbol combinations.
Worked example
Create a 24-character password using letters, digits, and symbols.
Limitations and responsible use
- A generated password is only secure if stored and transmitted safely.
- The entropy estimate assumes unbiased generation and does not account for reuse or exposure.
- Some services reject particular symbols or impose lower maximum lengths.
Frequently asked questions
Does MegaUtilities save generated passwords?
No. The password is generated and displayed locally without automatic storage.
How long should a password be?
Longer is generally stronger; follow the service policy and prefer a password manager for unique credentials.