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Generate secure passwords and passphrases with length and symbol controls. Uses Web Crypto API locally.
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Generates secure passwords with configurable length, character sets, and exclusion rules. Features ambiguous character exclusion (e.g., 1/l/I, 0/O), pronounceable password mode for memorable passwords, PIN mode for numeric-only codes, a 5-level strength meter, batch generation (1-50), generation history with copy, entropy display, and custom character set support.
Weak passwords are the leading cause of account compromises; generating strong, unique passwords is essential for security. Provides a flexible generator that balances security requirements with usability for different contexts (PINs, memorable passwords, maximum-strength keys).
This tool is part of the DevStackIO platform — a collection of free online developer tools from DevStackIO. Browse more free developer resources on DevStackIO.
Security-conscious users, system administrators managing user credentials, developers generating test passwords, and anyone needing strong, unique passwords for multiple accounts.
Set the password length using the slider (8-128 characters; 16+ recommended for strong passwords)
Configure character sets: toggle uppercase, lowercase, digits, and special characters on/off as needed
Enable ambiguous character exclusion to remove similar-looking characters (1/l/I, 0/O, etc.)
Select password generation mode: Random (maximum entropy), Pronounceable (memorable syllables), or PIN (digits only)
Use the strength meter to gauge password quality (Weak through Very Strong across 5 levels); monitor entropy bits displayed
Click "Generate" to create password(s); use the batch count selector (1-50) for multiple passwords; review history with timestamps
Settings: Length=16, all char sets, no exclusions -> Output: "k9#M2pQ$vL8@nX5" | Strength: Very Strong | Entropy: ~95 bitsSettings: Pronounceable mode, Length=12, lowercase only -> Output: "trobamvongre" | Strength: Weak | Entropy: ~56 bitsWhat does the entropy value mean?
Entropy (in bits) measures unpredictability; each bit doubles the number of guesses needed. 80 bits is considered secure against brute-force attacks.
Is pronounceable mode really secure?
Pronounceable passwords have lower entropy per character but are more memorable. Use them only for temporary or low-security contexts.
Can I exclude specific characters beyond ambiguous ones?
Yes, use the custom exclusion field to specify any characters to omit from generation.
Where is the password history stored?
History is stored in browser localStorage and can be cleared from the settings panel.
Authoritative specifications, standards, and in-depth reading for Password Generator.
Time to crack (1T guesses/s): Centuries+
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