Token Generator
Generate random strings for passwords, API keys, and security tokens with customizable length and character sets
Token Generator
Generate secure random tokens
About Token Generation
Random tokens are essential for security purposes. They are used to create unpredictable strings that are difficult to guess or brute-force.
Different scenarios may require different token characteristics:
- Passwords: Use a mix of all character types for maximum security
- API Keys: Often alphanumeric (no special characters) for easier usage in URLs
- Session Tokens: Longer tokens (32+ characters) for better security
This tool generates tokens client-side using JavaScript's pseudo-random number generator. For truly cryptographic-quality random tokens in production systems, consider using specialized cryptographic libraries.
Token Types and Use Cases
Different types of tokens serve different purposes in security and development. Here are common examples and their recommended configurations:
| Token Type | Example | Recommended Length | Character Types |
|---|---|---|---|
| Secure Password | aB3$cD7!eF9@gH2 | 16-24 characters | All (uppercase, lowercase, numbers, special) |
| API Key | 37fda8c94eb8b512e93f | 20-40 characters | Alphanumeric (easier to read/transmit) |
| Session Token | cdf5881d7af1ef0fd8e20762f8834e9da87901234a567890 | 32+ characters | Alphanumeric (hexadecimal) |
Token Security Best Practices
When using generated tokens in your applications, consider these security best practices:
- Store Tokens Securely: Never store sensitive tokens in plain text. Use secure storage mechanisms and proper encryption.
- Token Expiration: Implement expiration for security tokens, especially authentication tokens.
- Rate Limiting: Protect against brute force attacks by implementing rate limiting on API endpoints that accept tokens.
- Token Rotation: Implement policies to periodically rotate long-lived tokens.
- Transmission Security: Always transmit tokens over encrypted connections (HTTPS).
Generating Tokens in Different Programming Languages
For production use, here are examples of how to generate cryptographically secure tokens in different languages:
Node.js:
const crypto = require('crypto');
const token = crypto.randomBytes(16).toString('hex');
// Result: '3a1c267e3d15cec2fa4182e94a0187a2'
Python:
import secrets
token = secrets.token_hex(16)
# Result: '3a1c267e3d15cec2fa4182e94a0187a2'
PHP:
$token = bin2hex(random_bytes(16));
// Result: '3a1c267e3d15cec2fa4182e94a0187a2'
DevToolCafe's Token Generator is a free online tool for creating secure random strings for passwords, API keys, session tokens, and authentication secrets. Customize token length (8-128 characters) and character sets to match your security requirements. All token generation happens locally in your browser using cryptographic random number generation - your tokens are never transmitted or stored anywhere.
What is a Token Generator?
A token generator creates random strings of characters used for security purposes such as passwords, API keys, session identifiers, and authentication tokens. Good tokens are unpredictable, sufficiently long, and contain a mix of character types to resist brute-force attacks. Our generator uses cryptographically secure random number generation to ensure high-quality randomness.
Why Use Our Token Generator?
100% Client-Side Generation
Tokens are generated entirely in your browser. Nothing is sent to any server, ensuring your security credentials remain completely private.
Cryptographically Secure
Uses the Web Crypto API for true random number generation, producing tokens suitable for security-critical applications.
Fully Customizable
Control token length (8-128 characters) and character sets: uppercase, lowercase, numbers, and special characters.
Multiple Use Cases
Generate tokens for passwords, API keys, session tokens, OAuth secrets, database credentials, and more.
Instant Generation
Generate new tokens instantly with one click. No waiting, no rate limits, no account required.
Easy Copy & Use
One-click copy to clipboard. Tokens are displayed clearly and can be regenerated as many times as needed.
How to Generate Secure Tokens
Set Token Length
Use the slider to select your desired token length. For passwords, 16+ characters is recommended. For API keys, 32+ characters provides better security.
Choose Character Types
Select which character types to include: uppercase letters (A-Z), lowercase letters (a-z), numbers (0-9), and special characters (!@#$%^&*).
Generate Token
Click the 'Generate' button to create a new random token. Each click produces a completely new, unique token.
Copy and Use
Click the copy button to copy the token to your clipboard. Use it in your application, store it securely, or generate another.
Frequently Asked Questions
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