API Key Generator
NewGenerate production-ready API keys using cryptographically secure random number generation. Choose from multiple formats: hexadecimal (like many database APIs), Base64url (compact and URL-safe), UUID v4 (standardized format), or a custom prefix format (e.g., sk_live_xxxxxxxx). Set the key length from 16 to 64 bytes. All generation uses crypto.getRandomValues() for true randomness. Perfect for generating API secrets, access tokens, webhook secrets, and encryption keys.
API Key Generator
Generate cryptographically secure API keys in hex, Base64, or alphanumeric format with optional prefix.
How to Use API Key Generator
- 1Select the key format (hex, Base64, UUID)
- 2Set the key length in bytes
- 3Optionally add a custom prefix
- 4Click Generate and copy the key
About API Key Generator
Generate production-ready API keys using cryptographically secure random number generation. Choose from multiple formats: hexadecimal (like many database APIs), Base64url (compact and URL-safe), UUID v4 (standardized format), or a custom prefix format (e.g., sk_live_xxxxxxxx). Set the key length from 16 to 64 bytes. All generation uses crypto.getRandomValues() for true randomness. Perfect for generating API secrets, access tokens, webhook secrets, and encryption keys.
Your Privacy is Protected
API Key Generator runs entirely in your browser. Your files and data are never uploaded to any server, never stored, and never shared. Everything happens locally on your device using secure browser APIs.
Frequently Asked Questions
How long should an API key be?
At minimum 128 bits (16 bytes, 32 hex chars). For high-security contexts, use 256 bits (32 bytes, 64 hex chars). Never use keys shorter than 128 bits.
Why Use This Tool?
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