Secure Password Generator

Strength: — Entropy: 0 bits

Password Length 16

Uppercase (A-Z)

Lowercase (a-z)

Numbers (0-9)

Symbols (!@#$%...)

Exclude ambiguous characters (e.g. o, O, 0, I, l, 1)

Alternative Secure Passwords

Why Client-Side Password Generation is Secure

Many online password generators transmit the generated password over the internet to their servers, exposing it to potential intercept risks and logging activities. CryptoTools.site utilizes the native Web Cryptography API (window.crypto.getRandomValues) to generate random sequences directly in your browser. The generated password never travels across any network, keeping it 100% private.

What is Password Entropy?

Password entropy measures the unpredictable randomness of a generated password in bits. Higher entropy values indicate stronger resistance to brute-force attacks:

Under 50 bits: Weak (Vulnerable to cracking)
50–80 bits: Medium Strength
80+ bits: Extremely Strong (Mathematically impossible to brute-force with modern hardware)

100% Private & Client-Side

Your generated passwords never leaves your browser — not even for a millisecond.

Verified Private

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No Server Transmission All computation runs in your browser. Zero data sent to our servers.

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No Storage We store nothing. No databases, no logs, no cookies with your input.

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Works Offline Once loaded, this tool works even with no internet connection.

Open-source on GitHub — read and verify the exact code powering this tool. View Source Code →

Secure Password Generator

Alternative Secure Passwords

Why Client-Side Password Generation is Secure

What is Password Entropy?

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