Password Generator secure

What this tool does

Password strength comes from length and randomness rather than from elaborate composition rules. A long unpredictable string is far stronger than a short word with one symbol inserted. Passwords chosen by people tend to follow patterns based on names, dates, keyboard layouts, and common word substitutions, which is exactly what guessing attacks exploit.

This tool uses the browser cryptographic random number generator to produce unpredictable strings. Length and the character sets to include (uppercase, lowercase, digits, symbols) are configurable, and several candidates can be generated at once.

Generated values are displayed only. Nothing is transmitted or stored, and reloading the page discards them.

When to use it

Use it when creating a password for a new account or service, when setting an initial value for a database user or API key, when preparing test account credentials, or when issuing a temporary access code.

Input and output examples

Notes and limitations

Store generated passwords in a password manager. Random strings cannot be memorised, and leaving them in a note or a chat message creates a new weakness. Services differ in which symbols they accept, so adjust the character set if a password is rejected. The browser itself must also be trustworthy: values generated on a shared computer or in a browser loaded with extensions should not be used for production systems. Never reuse the same password across services.

Frequently asked questions