How to create secure passwords that protect your accounts
A secure password combines length, randomness, and character variety. The higher the key entropy, the more time and resources an attacker would need to crack it through brute force.
This password generator uses the browser cryptographic generator (Web Crypto API) to produce unpredictable keys. We do not store or transmit generated passwords: everything happens on your device.
Tips for creating secure passwords
- Use at least 12-16 characters for important accounts (email, banking, administration).
- Combine uppercase, lowercase, numbers, and symbols to increase complexity.
- Do not reuse the same password across services: each account should have a unique key.
- Avoid predictable personal data such as names, birth dates, or dictionary words.
- Enable multi-factor authentication (MFA) whenever available to add an extra protection layer.
Estimated brute-force password cracking time
| Password type (12 characters) | Estimated cracking time |
|---|---|
| Numbers only | Seconds or minutes |
| Lowercase letters only | Hours or days |
| Uppercase, lowercase, and numbers | Years or decades |
| Letters, numbers, and symbols | Thousands of years or more |
Frequently asked questions about the password generator
How does the random password generator work?
The generator creates passwords based on your selected settings: length, uppercase, lowercase, numbers, and symbols. Each character is randomly selected using Web Crypto API, the browser cryptographic standard.
What makes a password secure?
A secure password is long, random, and unique. Including different character types increases the search space and makes brute-force and dictionary attacks harder.
Can a secure password be hacked?
Technically yes, but required time grows exponentially with length and character variety. A 12-character key with letters, numbers, and symbols can require thousands of years compared with a few hours for a short and simple key.
Is it safe to use an online password generator?
Yes, as long as generation happens on the client side and keys are not sent to a server. This tool generates and displays passwords only in your browser, with no storage or logging.
Should I use a password manager?
It is highly recommended. A password manager lets you store long unique keys without memorizing all of them, reducing reuse and forgotten-password risks.
How can I protect my company's passwords?
In addition to strong password policies, train your team, enable MFA, and review access regularly. At Efiprox we help companies with cybersecurity services.