Password Generator
Generate strong, random passwords with customizable length, uppercase, numbers, and special characters.
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Generated in-browser using Web Crypto API - never sent to any server.
About the Password Generator
A strong, unique password for every account is the single most effective personal cybersecurity measure. Data breaches at large companies expose millions of passwords each year - if you reuse passwords, one breach compromises all your accounts. The Web Crypto API generates cryptographically random passwords directly in your browser, meaning your passwords are never transmitted or stored anywhere.
Password Strength
Entropy bits = log2(charset_size^length) · 12 char mixed = 2^72 combinations = trillions of years to brute-force
Lowercase only (26 chars): 12 chars = 26^12 ≈ 95 trillion combinations · Mixed (95 printable ASCII): 12 chars = 95^12 ≈ 540 quintillion · Each additional character of mixed set multiplies strength by 95×
Worked Example
Password policy requirements: minimum 12 characters, mixed case, numbers, symbols
Entropy: 105 bits · Estimated brute-force time (1 trillion guesses/sec): 1.2 quintillion years · Classification: Extremely strong
Tips & Insights
- 1
Use a password manager (Bitwarden is free and open-source) to store unique passwords for every site - you only need to remember one master password.
- 2
Enable two-factor authentication (2FA) everywhere it is offered - it protects accounts even if your password is compromised.
- 3
Never use personal information (name, birthday, phone number) in passwords - these are the first things dictionary attacks try.
- 4
A passphrase of 4-5 random words (correct-horse-battery-staple) is as strong as a 12-character mixed password and easier to remember.
Why this matters for you
India reported over 13 million cybercrime incidents in 2023, many stemming from weak or reused passwords. Banking credentials, UPI PINs, and email access are high-value targets. A 16-character randomly generated password has never been broken by brute force in history - the only way it gets compromised is through phishing or database breaches, both of which require different defenses.
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