Token Settings
Generated Tokens
Generated tokens will appear here
How It Works
- Select Token Format: Choose from UUID v4 (RFC 4122 compliant), Base64 (URL-safe encoding), Hex (lowercase hexadecimal), Alphanumeric (A-Z, 0-9), or custom character sets.
- Configure Parameters: Set token length (8-128 characters), quantity (1-20 tokens), and optional prefixes/suffixes for namespace organization (e.g., 'sk_' for secret keys, '_prod' for production).
- Generate Securely: The tool uses crypto.getRandomValues() to generate cryptographically secure random bytes, then encodes them in your chosen format ensuring uniqueness and unpredictability.
- Copy or Download: Copy individual tokens or all tokens at once. Download as .txt file for bulk import into configuration files, environment variables, or API management systems.
Manual vs Automated Token Generation
| Feature | Manual Creation | AI-Powered Generator |
|---|---|---|
| Token Security | Weak pseudo-random generation | Cryptographically secure crypto.getRandomValues() |
| Format Options | Manual encoding required | UUID, Base64, Hex, Alphanumeric, Custom |
| Bulk Generation | Generate one at a time | Generate up to 20 tokens instantly |
| Prefix/Suffix | Manually add to each token | Auto-applies to all generated tokens |
| Uniqueness | Risk of collisions | Statistically guaranteed unique (2^128) |
| Export | Copy-paste each token | Download all as .txt file |
Token Generation Examples
Example 1: API Key Generation
Format: Alphanumeric
Length: 32 characters
Prefix: sk_
Quantity: 3
Use Case: REST API authenticationsk_aB3xK9mN2pQ7rS4tV8wX1yZ5cD6eF0gH
sk_jK2lM4nO6pQ8rS1tU3vW5xY7zA9bC0dE
sk_fG1hI3jK5lM7nO9pQ2rS4tU6vW8xY0zAKey Changes:
The token maker generates API keys with consistent 'sk_' prefix following industry conventions (Stripe, OpenAI use similar patterns). The 32-character alphanumeric suffix provides 190 bits of entropy (log2(62^32)), making collision probability negligible even with billions of tokens. The prefix enables easy identification and filtering in logs, code, and configuration files. These tokens are URL-safe without encoding, perfect for REST API headers and query parameters. The alphanumeric character set (A-Z, a-z, 0-9) avoids special characters that might cause issues in shell scripts or configuration parsers. Each token is cryptographically unique, suitable for production authentication systems where token compromise would grant API access. Store these tokens hashed (SHA-256) in databases for security.
Example 2: Session Token with UUID Format
Format: UUID v4
Length: 36 characters (fixed)
Prefix: None
Quantity: 5
Use Case: Session management, database primary keysa1b2c3d4-e5f6-4789-a012-b3c4d5e6f7a8
f9e8d7c6-b5a4-4321-9876-543210fedcba
12345678-90ab-4cde-f012-3456789abcde
abcdef01-2345-4678-90ab-cdef01234567
98765432-10fe-4dcb-a987-654321fedcbaKey Changes:
UUID v4 tokens follow RFC 4122 standard with 122 bits of randomness (6 bits are fixed for version and variant). The hyphenated format (8-4-4-4-12) is universally recognized by databases (PostgreSQL UUID type), programming languages (Java UUID class, Python uuid module), and APIs. UUIDs are ideal for distributed systems where multiple servers generate IDs independently without coordination—collision probability is 1 in 2^122 (5.3 × 10^36). The fixed 36-character length simplifies database schema design and validation. Use UUIDs for session tokens, database primary keys, distributed transaction IDs, and any scenario requiring globally unique identifiers. They're more secure than sequential IDs which leak information about system scale and timing.
Frequently Asked Questions
What token format should I use for API keys?
Use Alphanumeric or Base64 format for API keys. Alphanumeric (A-Z, a-z, 0-9) provides clean, URL-safe tokens without special characters, making them safe for HTTP headers, query parameters, and shell scripts. Generate 32-40 characters for 190-238 bits of entropy, sufficient for production security. Add prefixes like 'sk_' (secret key), 'pk_' (public key), or 'tk_' (token) to identify key types in logs and code. Base64 format is more compact (6 bits per character vs 5.95 for alphanumeric) but includes '+' and '/' characters requiring URL encoding. For maximum compatibility, use Alphanumeric with 32+ characters. Store API keys hashed (SHA-256 or bcrypt) in databases, never in plain text. Rotate keys every 90 days and implement rate limiting to prevent brute-force attacks.
How are these tokens different from JWTs?
These are opaque tokens (random strings) while JWTs are structured tokens containing encoded data. Opaque tokens provide better security because they reveal no information—attackers must query your server to validate them. JWTs contain claims (user ID, expiration, permissions) encoded in base64, making them larger (150-500 bytes) and potentially leaking information if not encrypted. Use opaque tokens from this generator for API keys, session IDs, and refresh tokens where you control validation. Use JWTs for stateless authentication where tokens must be validated without database lookups. For hybrid approaches, generate an opaque token here as the JWT's 'jti' (JWT ID) claim for revocation tracking. Opaque tokens are simpler, more secure, and give you full control over validation logic and revocation.
Can I use these tokens for production systems?
Yes, absolutely. The tokens use crypto.getRandomValues() which provides cryptographically secure random number generation meeting FIPS 140-2 standards. This is the same API used by production password managers, authentication systems, and cryptographic libraries. For production use, follow these guidelines: (1) Use 32+ characters for API keys and session tokens (190+ bits entropy), (2) Add prefixes for token type identification, (3) Store tokens hashed (SHA-256 minimum) in databases, (4) Implement token expiration and rotation policies, (5) Use HTTPS exclusively for token transmission, (6) Log token usage for security auditing (log prefixes only, never full tokens), (7) Implement rate limiting on token validation endpoints. These tokens are suitable for OAuth 2.0 bearer tokens, API authentication, session management, CSRF protection, and any security-critical application requiring unpredictable identifiers.