Generate secure passwords, UUIDs, hashes, and license keys. Create strong authentication credentials, unique identifiers, and cryptographic hashes for security and development.
Security and authentication require generating strong passwords, unique identifiers, cryptographic hashes, and license keys. Weak passwords compromise accounts, colliding UUIDs break distributed systems, insecure hashes expose data, and predictable license keys enable piracy.
These generators create cryptographically secure credentials using industry-standard algorithms. Generate strong random passwords, memorable passphrases, universally unique identifiers (UUIDs), cryptographic hashes (MD5, SHA), and software license keys with customizable formats.
Perfect for developers building authentication systems, security professionals testing systems, software vendors generating licenses, database administrators creating unique keys, and anyone requiring secure random values. All generation happens locally in your browser without server transmission.
Step-by-step guidance and best practices for getting the most out of this collection
Password generation creates strong random passwords using cryptographically secure random number generators. Strong passwords mix uppercase, lowercase, numbers, and symbols across sufficient length (12+ characters minimum, 16+ recommended). The Password Generator lets you specify length, character sets, and exclusions (ambiguous characters like O/0, I/l). Avoid dictionary words, personal information, and patterns. Use unique passwords per account with a password manager to store them. Never reuse passwords across sites, as breaches of one site compromise all accounts using that password.
Memorable password generation creates passphrases using random dictionary words (correct-horse-battery-staple style). The Memorable Password Generator combines 4-6 random words with optional numbers and symbols, creating passwords that are both strong and memorizable. Passphrases achieve security through length and randomness rather than complexity. Five random words (40+ characters) provide excellent security while remaining typeable. Passphrases work well for master passwords you type frequently but should still be unique per account.
UUID generation creates 128-bit unique identifiers following RFC 4122. UUIDv4 uses random numbers, making collision probability astronomically low (1 in 5.3 × 10³⁶ for first collision). The UUID Generator creates standard format: 8-4-4-4-12 hexadecimal groups (550e8400-e29b-41d4-a716-446655440000). Use UUIDs for database primary keys, distributed system identifiers, session tokens, and anywhere unique IDs are needed without coordination. UUIDs prevent ID collisions in distributed systems where centralized ID generation is impractical.
Hash generation creates fixed-size cryptographic fingerprints of data using algorithms like MD5, SHA-1, SHA-256. The Hash Generator produces hashes for file integrity verification, password storage (with salt), and data deduplication. Never use MD5 or SHA-1 for security (both have known collisions), only for non-security checksums. Use SHA-256 or higher for security. Hashes are one-way functions: easy to compute, impossible to reverse. Always salt and iterate password hashes (use bcrypt, scrypt, or Argon2 in production).
License key generation creates formatted strings for software activation. The License Key Generator produces keys with customizable patterns (XXXX-XXXX-XXXX-XXXX), character sets, and check digits. Simple random keys work for product differentiation but provide no security. Secure licensing requires server validation, cryptographic signatures, or hardware binding. Generated keys suit offline activation, serial number tracking, or light copy protection. Never rely on client-side key validation for serious security.
Create strong passwords and passphrases
Generate UUIDs for databases and systems
Generate hashes and license keys
Common ways professionals use these tools together
Generate strong random password
Password Generator
Store in password manager
Password Generator
Generate UUID for new record
UUID Generator
Use UUID as primary key value
UUID Generator
Generate hash of original file
Hash Generator
Compare with downloaded file hash
Hash Generator
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