How are passwords generated?
The tool uses the browser Web Crypto API with rejection sampling for unbiased character selection, then securely shuffles the completed password.
Random Password Generator
Create configurable passwords locally with secure browser randomness.
How to generate a random password
- Choose a length from 4 through 128 characters.
- Enable at least one character type.
- Generate the password and copy it directly when needed.
Secure selection behavior
One character is selected from every enabled group, remaining positions are filled from the combined enabled pool, and the result is securely shuffled. Random integer selection rejects out-of-range values before applying modulo, avoiding naïve modulo bias.
The result always matches the requested length and never includes a disabled character set. Length must be large enough to represent every enabled group.
Privacy and practical limits
Passwords are generated locally with crypto.getRandomValues(). They are never persisted to local storage or cookies, added to a URL, transmitted to an API, logged, or included in analytics. Copy only to a destination you trust, and use a password manager when appropriate.
Frequently asked questions
Is the password generated locally?
Yes. Generation and copying happen in your browser. The password is not sent to a server, stored, logged, or included in analytics.
Can I choose which character types are included?
Yes. Enable uppercase letters, lowercase letters, numbers, or symbols. Every selected type is guaranteed to appear at least once.
How is this different from Random String Generator?
This tool is credential-oriented, requires secure browser randomness, and guarantees selected character types. Random String Generator is intended for general test values and placeholders.
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