🎫 Token Generator
Generate random tokens, supports custom character sets and length
πŸ” Debug Info: If the copy button doesn't work, open browser console (F12) to view error information and ensure you're using HTTPS or localhost.
πŸ’‘ Tip: Check the character types you need, adjust the length, then click "Generate Token". Supports generating random tokens with 1-512 characters.

Random Token Generator

Generate cryptographically secure random tokens with this tool. Create custom tokens with specific character sets and lengths for API keys, access tokens, verification codes, and other security applications. All tokens are generated using the Web Crypto API for true randomness.

Common Token Use Cases

  • πŸ”‘ API Keys: Generate secure API keys for application authentication and authorization.
  • πŸ”‘ Access Tokens: Create OAuth2 access tokens for user authentication.
  • πŸ”‘ Verification Codes: Generate one-time codes for email or SMS verification.
  • πŸ”‘ Session IDs: Create unique identifiers for user sessions.
  • πŸ”‘ CSRF Tokens: Generate anti-CSRF tokens for web application security.
  • πŸ”‘ Invite Codes: Create unique invitation codes for user registration.
  • πŸ”‘ Password Reset Tokens: Generate secure tokens for password recovery flows.

Character Set Options

  • βœ“ Uppercase (A-Z): 26 characters for case-sensitive tokens
  • βœ“ Lowercase (a-z): 26 characters for case-sensitive tokens
  • βœ“ Numbers (0-9): 10 digits for numeric tokens
  • βœ“ Symbols: Special characters for increased entropy

Token Length Guidelines

The security of a token depends on its length and character set size. Here are recommended lengths for different use cases:

  • 8-16 characters: Simple verification codes (lower entropy)
  • 32-64 characters: API keys and access tokens (standard security)
  • 64-128 characters: High-security tokens and encryption keys
  • 128-512 characters: Maximum security for critical applications

Entropy Calculation

Token entropy is calculated using: E = L Γ— logβ‚‚(N)

  • Example 1: 16 chars with lowercase only (N=26) = 16 Γ— logβ‚‚(26) β‰ˆ 75 bits
  • Example 2: 16 chars with all types (N=62) = 16 Γ— logβ‚‚(62) β‰ˆ 95 bits
  • Example 3: 32 chars with all types + symbols (N=94) = 32 Γ— logβ‚‚(94) β‰ˆ 209 bits

How to Use This Token Generator

  1. Select Character Types: Choose which character sets to include in your token.
  2. Set Token Length: Use the slider or input field to set the desired length (1-512 characters).
  3. Generate Token: Click "Generate Token" to create a secure random token.
  4. Copy Token: Use the copy button to copy the generated token to clipboard.
  5. Clear: Use the clear button to reset and generate a new token.

Security Best Practices

  • ⚠ Use HTTPS: Always transmit tokens over encrypted connections.
  • ⚠ Token Expiration: Implement expiration times for tokens, especially access tokens.
  • ⚠ Secure Storage: Store tokens securely using appropriate browser storage mechanisms.
  • ⚠ Token Revocation: Implement token revocation mechanisms for compromised tokens.
  • ⚠ Rate Limiting: Protect token validation endpoints with rate limiting.
πŸ”’ Security Note:

This tool uses the Web Crypto API's crypto.getRandomValues() for cryptographically secure random number generation. All token generation happens entirely in your browser - no data is sent to any server. For production systems handling sensitive data, consider using dedicated key management services or hardware security modules.