Password Generator — Strong & Free
Generate strong, random passwords with custom length and characters. 100% in your browser — free, no sign-up.
- ✓Free
- ✓No sign-up
- ✓Runs in your browser — files never uploaded
- ✓No watermark
How to
- 1Choose a length and which character types to include.
- 2A password is generated instantly in your browser.
- 3Copy it, or regenerate until you are happy.
What makes a strong password?
Strength comes from length and unpredictability. A long password drawn from a large mix of character types — uppercase, lowercase, digits, and symbols — has so many possible combinations that guessing or brute-forcing it becomes impractical. Length matters more than any single clever substitution.
How this generator works
Each character is picked using your browser's cryptographically secure randomness (crypto.getRandomValues) with rejection sampling, so every character in the pool is equally likely and there is no bias. The password is created entirely on your device and never sent over the network.
When to use it
Create a unique password for every account, generate a strong passphrase for a new sign-up, or replace a reused or leaked password. Pair it with a password manager so you never have to remember the long random strings.
Why randomness and length beat tricks
Predictable patterns — a word with a number on the end, common letter-for-symbol swaps — are the first things attackers try. True randomness removes patterns, and each extra character multiplies the number of possibilities, which is why a longer random password is far stronger than a short 'complex' one.
FAQ
Are the passwords generated privately?+
Yes. Each password is created from secure randomness in your browser (crypto.getRandomValues) and is never sent over the network.
How long should my password be?+
Longer is stronger. 16 characters or more from a mix of character types is a good default; use the length slider to go higher for important accounts.
What does "no ambiguous characters" do?+
It removes look-alike characters (0 O 1 l I |) so the password is easier to read and type by hand without mistakes.
Should I reuse a generated password?+
No. Generate a unique password for every account and store them in a password manager — reuse is what makes one leak compromise many accounts.
Is it free?+
Yes, completely free — no sign-up and no watermark.