API Key Generator
Generate secure API keys and tokens online for free. Customize format and length.
About This Tool
Generate cryptographically secure API keys in various formats — hex, base64, alphanumeric. Perfect for seeding application secrets and API credentials.
How to Use
Choose Format
Select key format and length.
Generate
Click Generate to create a secure API key.
Copy
Copy the key to use in your application.
Use Cases
App Secrets
Generate API keys for application authentication and service integrations.
Frequently Asked Questions
Are keys cryptographically secure?
Yes. Keys are generated using crypto.getRandomValues() — the same API browsers use for TLS.