Password जनरेटर

What is Password जनरेटर?

A password generator produces random, high-entropy strings suitable for use as account passwords. Users control the length and which character classes are included (lowercase, uppercase, digits, symbols). Strong passwords resist brute-force and dictionary attacks — entropy, measured in bits, grows with length and alphabet size. A 16-character password drawn from a 94-character set has roughly 105 bits of entropy, far exceeding the threshold for infeasible offline cracking.

How It Works

The generator uses the Web Crypto API's crypto.getRandomValues, which provides cryptographically secure randomness sourced from the operating system's CSPRNG. For each character position, a uniform random index into the selected alphabet is generated via rejection sampling to avoid modulo bias. The result is shuffled to prevent positional patterns. The output never leaves the browser and is not stored.

Common Use Cases

• Creating new account passwords — generate a strong unique password for each service
• Rotating compromised credentials — replace a leaked password with a fresh high-entropy one
• Generating API keys or secrets — produce random tokens for service-to-service auth
• Setting up database or admin passwords — use a long random string instead of a passphrase

Technical Details

Randomness: crypto.getRandomValues (CSPRNG, not Math.random). Selection uses rejection sampling to eliminate modulo bias. Default length: 16; alphabet combines a-z, A-Z, 0-9, and symbols (!@#$%^&*...) by default. Entropy = length × log2(alphabetSize). The output is not logged or transmitted. Avoid reusing generated passwords across accounts.