All tools
Five utilities for creating and evaluating secrets. Every one runs client-side, with no server-side processing of your input.
This tool runs entirely in your browser. Nothing you type or generate is uploaded, stored or logged.
Password Generator
Generate cryptographically secure random passwords in your browser. Choose the length, character groups, and whether to exclude visually ambiguous characters. The result never leaves your device.
Passphrase Generator
Generate memorable passphrases using uniform random selection from a large curated word list. Adjust the word count, separator and capitalisation, with the resulting entropy explained in plain language.
Password Strength Checker
Analyse a password entirely on your device for length, repetition, sequences and common patterns. The input is never transmitted, logged or stored. The score is an estimate, not a guarantee.
Handles sensitive input. What you type here is analysed locally and never transmitted.
Password Entropy Calculator
See how entropy is calculated for a given character pool or word list, what patterns reduce that entropy in practice, and why the theoretical number is an upper bound rather than a guarantee.
Random String Generator
Create secure random strings of any length from the character sets you choose. Useful for API keys, tokens, salts and identifiers. Generation is entirely client-side.