Password Regex Generator

Choose minimum/maximum length and optional lowercase, uppercase, digit, symbol, or whitespace rules to create a JavaScript-compatible validation regex.

Minimum length

Maximum length

Test password

Modern password guidance without false certainty

v10.77 keeps password/passphrase generation and review browser-local while shifting guidance toward length, uniqueness, common-password blocking, password-manager compatibility, MFA, and compromise-driven changes rather than arbitrary composition rules or guaranteed crack-time claims.

Security boundary

A local meter can flag obvious patterns but cannot prove that a password is safe, unused elsewhere, or absent from every breach corpus. Do not paste sensitive production password exports into batch tools; generate unique secrets locally and store them in an appropriate password manager.

Build a validation regex

Select length and composition requirements to create a JavaScript-compatible regular expression, then try a sample password against it.

Validation is not strength measurement

A regex can enforce syntax such as minimum length or required character classes, but it cannot prove that a password is unique, random, uncompromised, or resistant to guessing.