Create a secret
Customize passwords, passphrases, API keys, and website-specific passwords.
Secure Password Generator
Generate cryptographically secure random passwords with customizable character sets and advanced security features.
16+ Characters
Long passwords with mixed character types for maximum security
Optional breach check
Enable the toggle to check known breaches. Your password is never sent.
Instant Generation
Fast, secure password creation with one-click copying
Best Password Practices
✓Do's
- Use a unique password for each account.
- Prefer long passphrases (at least 12–16 characters).
- Use a password manager to generate and store passwords securely.
- Enable two-factor or multi-factor authentication whenever possible.
- Change compromised passwords immediately when notified.
✕Don'ts
- Reuse passwords across multiple sites or services.
- Use personal information like birthdays or pet names.
- Share passwords via email, text, or messaging apps.
- Store passwords in plain text or browser notes.
- Rely on short or easy-to-guess passwords.
More tools
Choose the tool that fits what you need.
Check its strength
Spot predictable patterns in passwords, passphrases, and PINs.
Check known breaches
Run a check when you choose. Only a hash prefix is sent; your password stays on your device.
Find your next tool
Create a username, generate a PIN, or build a Diceware passphrase with real dice.
Further reading
Practical security guides from the blog
Use the generator, then go deeper on password strength, passkeys, secure sharing, and account hygiene.
Frequently Asked Questions
How do I generate a secure password?
How do I generate a secure password?
Click the regenerate button or simply load the page—our Secure Password Generator creates a new strong password automatically. All passwords are generated with cryptographically secure randomness and include letters, numbers, and symbols. They are also checked against known breach databases before being shown.
What makes a password secure?
What makes a password secure?
A secure password should be:
- at least 16 characters long
- contain uppercase, lowercase, numbers, and symbols
- avoid dictionary words and patterns
- be unique for every account
- not appear in breach databases
Our generator follows these rules and automatically checks passwords against Have I Been Pwned.
Do you store or see my passwords?
Do you store or see my passwords?
No. Everything runs entirely in your browser.
Your passwords are generated, evaluated, and copied locally. Nothing is ever sent to our servers.
The optional breach test uses HIBP's k-anonymity protocol. Only the first 5 characters of the SHA-1 hash are sent—your full password never leaves your device.
How does breach checking work?
How does breach checking work?
We use the Have I Been Pwned k-anonymity API to detect if your password has appeared in known leaks.
Your password is hashed locally, and only a partial hashed prefix is transmitted. The full comparison happens on your device, ensuring complete privacy.
What is password strength and how is it calculated?
What is password strength and how is it calculated?
We use zxcvbn (Dropbox's password strength estimator) to measure strength using real-world attack patterns—not simple complexity rules.
It checks against common passwords, dictionary words, leaked datasets, and predictable keyboard patterns to estimate how long a password would take to crack.
Weak passwords (scores 0–2) are flagged; strong passwords (scores 3–4) are recommended.
Should I use a password or passphrase?
Should I use a password or passphrase?
Both can be secure when generated correctly:
- Passwords are compact and suitable for most online accounts.
- Passphrases use multiple random words and are easier to remember and type, ideal for frequently used logins.
Our tools let you generate both depending on your needs.
If you want a memorable secret built from random words, read our Diceware guide or use the Diceware generator.
How often should I change my passwords?
How often should I change my passwords?
You only need to change a password when:
- it appears in a breach
- you suspect compromise
- someone else may have seen or copied it
- your employer requires rotation
For strong, unique, uncompromised passwords, routine rotation is not necessary.
More important is using unique passwords for every account and enabling two-factor authentication.
Can I securely share a generated password with someone?
Can I securely share a generated password with someone?
Yes — use the "Share via PrivateNote.ai" button. It opens PrivateNote.ai with your password pre-filled in an encrypted note. You review it first, then click one button to get a self-destructing link.
The password is passed only through the URL fragment (#), which is never sent to any server. PrivateNote never sees it until you explicitly create the note.
Can I use a PIN instead of a password?
Can I use a PIN instead of a password?
No. A PIN is for device locks and local access. Online accounts need a long unique password or passphrase.
If you need a numeric code for a phone or card, open the PIN generator to generate a random 4 or 6 digit PIN.
