How the password generator works
Choose a length and which character types to include, uppercase, lowercase, numbers, and symbols, then generate a random password. It is created in your browser using your device cryptographic randomness when available, and nothing is sent anywhere. A strength meter estimates how hard the result would be to guess.
What makes a strong password
Length matters more than anything: each extra character multiplies the number of possible combinations. Mixing character types widens the pool further. A long random string of mixed types is far stronger than a short complex one, which is why a sixteen character password with all types is a solid default.
Reading the strength meter
The meter estimates entropy, a measure of unpredictability in bits, from the length and the size of the character pool. More bits means exponentially more guesses needed to crack it. Roughly speaking, anything below the strong mark is better avoided for important accounts, while higher is better for anything valuable.
Using passwords safely
Use a unique password for every account so one breach cannot unlock the rest, and store them in a reputable password manager rather than reusing or memorizing many. Generate fresh, never reuse, and turn on two factor authentication where offered. This tool creates passwords locally and never stores or transmits them.
Frequently asked questions
Are these passwords safe to use? They are generated locally with secure randomness and never sent anywhere, so yes.
How long should a password be? Sixteen characters or more with mixed types is a strong, practical default.
Should I reuse passwords? Never; use a unique one per account and a password manager to keep track.
Related tools: Base64, JSON Formatter, Hex to RGB.