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$Kf2!qZ7vRt is very strong but hard to remember — perfect when a password manager fills it in for you. A passphrase like Maple-River-Quiet-Stone strings random words together: it is long enough to be very hard to crack yet easy to type and remember. Use passwords for accounts your manager handles, and passphrases for ones you type yourself.
What makes a password strong?
Length matters most. Each extra character multiplies the number of possible combinations, so a long password beats a short complicated one. Mixing uppercase, lowercase, numbers and symbols helps too. The strength bar shows an estimate in “bits of entropy” — higher is better; aim for 60 bits or more for important accounts.
Staying safe
Use a different password for every account, store them in a reputable password manager, and turn on two-factor authentication where you can. Because PassBloom runs entirely on your device, you can safely generate passwords even offline.
More on passwords
Why strong, unique passwords matter
Most account break-ins do not involve clever hacking — they happen when a password leaked from one site is tried on others, or when a short password is guessed by software that tries billions of combinations. The two best defences are simple: make every password long, and never reuse one. PassBloom helps with both, generating strong random passwords and memorable passphrases using your browser's cryptographic random generator.
Passwords vs passphrases
A random password such as 9$Kf2!qZ7vRt packs a lot of unpredictability into a few characters — ideal when a password manager fills it in for you. A passphrase such as Maple-River-Quiet-Stone strings random words together; it is long enough to be very hard to crack yet easy to type and remember, which suits the handful of passwords you enter by hand.
Understanding the strength meter
The strength bar estimates entropy in bits — a measure of how many guesses an attacker would need. Each extra character or word roughly multiplies that number, so length matters far more than swapping a letter for a symbol. Aim for 60 bits or more on important accounts; the meter turns green as you get there.
Staying safe
Use a different password everywhere, store them in a reputable password manager, and turn on two-factor authentication wherever it is offered. Because PassBloom runs entirely on your device with no network calls, you can safely generate credentials even offline, and nothing you create is ever logged or uploaded.