Password entropy
Entropy estimates the search space from password length and active charset size. Longer random values usually matter more than complex rules.
Security utility
Secure Password and Salt Generator
Create random passwords and salts with browser cryptographic randomness, then inspect charset size, entropy, and output formats.
- Runtime
- Browser
- Random
- Crypto
- Storage
- None
Generator
Values are generated with crypto.getRandomValues.
24
Ready to generate secure values.
Salt output
Generate random salt bytes and choose an encoding.
16
Salt bytes
Salts should be random and unique. They are normally stored beside a password hash and do not need to be memorized or kept secret.
Crypto randomness
crypto.getRandomValues provides browser cryptographic random bytes. The generator uses rejection sampling to avoid modulo bias when choosing characters.
Usage guide
How to use the password and salt generator
What this tool shows
It generates random passwords and salts with Web Crypto, estimates entropy, and displays the active character composition.
How to test it
Change length, toggle character groups, skip ambiguous characters, then compare entropy and salt formats before copying a value.
When it helps
Use it for temporary credentials, demo secrets, database seed data, password hash salts, or teaching why length and randomness matter.