Strong Password Generator

Create strong passwords and memorable passphrases, and check how strong a password is — all securely in your browser.

Random password

A strong random password from the character types you choose.

Weak
16

Memorable passphrase

Several random words joined together — easier to remember, hard to crack.

Weak
4

Password strength checker

Type a password to estimate its strength. It is checked on your device only.

Enter a password

This is an estimate based on length and character variety. Your input never leaves your browser.

Guide

Make strong passwords the easy way

PassBloom is a free password generator that creates strong, random passwords and memorable passphrases right in your browser. It uses your browser’s cryptographic random generator (the same kind of randomness used for security), so the results are unpredictable. Nothing you generate or type is ever uploaded — there is no server involved at all.

Password or passphrase?

A random password like 9$Kf2!qZ7vRt is very strong but hard to remember — perfect when a password manager fills it in for you. A passphrase like Maple-River-Quiet-Stone strings random words together: it is long enough to be very hard to crack yet easy to type and remember. Use passwords for accounts your manager handles, and passphrases for ones you type yourself.

What makes a password strong?

Length matters most. Each extra character multiplies the number of possible combinations, so a long password beats a short complicated one. Mixing uppercase, lowercase, numbers and symbols helps too. The strength bar shows an estimate in “bits of entropy” — higher is better; aim for 60 bits or more for important accounts.

Staying safe

Use a different password for every account, store them in a reputable password manager, and turn on two-factor authentication where you can. Because PassBloom runs entirely on your device, you can safely generate passwords even offline.

FAQ

Frequently asked questions

Are the passwords really random and safe?

Yes. PassBloom uses the browser’s cryptographically secure random generator (crypto.getRandomValues), not a predictable one, and everything happens on your device.

Is anything sent to a server?

No. Generation and strength checking run entirely in your browser. Nothing you generate or type is uploaded, stored or logged.

Is it free?

Yes — completely free, with no sign-up and no limits.

How long should my password be?

For important accounts, use at least 16 characters, or a passphrase of 4–6 words. Longer is always stronger.