Password Generator
Strong random passwords instantly
Free forever — no sign-up, nothing uploaded. Files never leave your device.
Password Generator
Strong random passwords instantly
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Browse filesdocument.pdf
1.2 MB
report.pdf
860 KB
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About this tool
Generate cryptographically strong passwords with length and character-type controls.
The BrainCoder Strong Password Generator creates cryptographically random passwords instantly. Configure the length, character types (uppercase, lowercase, digits, symbols), and exclusion rules to generate passwords that meet any requirement — from simple Wi-Fi passwords to complex enterprise credential policies.
The generator uses the browser's Crypto.getRandomValues() API, which provides cryptographically secure randomness sourced from the operating system's entropy pool. This is vastly superior to Math.random()-based generators, which produce predictable sequences that attackers can exploit. Each password is unique, unpredictable, and statistically resistant to brute-force attacks.
Your generated passwords are never stored, transmitted, or logged. They exist only on your screen and nowhere else. The tool also calculates password entropy and estimated crack time so you can make informed decisions about password strength. This is the safest way to generate passwords — entirely offline, zero trust required.
Key features
Everything you get with Password Generator — no premium upsell.
Cryptographically secure random generation
Configurable length from 4 to 128 characters
Toggle uppercase, lowercase, digits, and symbols
Exclude ambiguous characters (0, O, l, 1, I)
Password entropy and strength indicator
Generate multiple passwords at once
How to use Password Generator
Follow the steps below to use the tool.
- 1
Set password length
Use the slider or input to set your desired password length. Longer passwords are exponentially harder to crack — 16+ characters is recommended.
- 2
Choose character types
Toggle on the character types you want: uppercase letters, lowercase letters, digits, and symbols. Include all four for maximum security.
- 3
Configure exclusion rules
Optionally exclude ambiguous characters that look similar (like 0/O or l/1/I) to make passwords easier to read and type.
- 4
Generate and copy
Click 'Generate' to create a new random password. Review the entropy score and crack time estimate, then click 'Copy' to grab it.
Still free, still private — your files never leave your device.
Launch Password GeneratorFrequently asked questions
Quick answers before you launch the tool.
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