API Key Generator
Revision: April 15, 2026 • Generate secure keys locally
Create secure tokens instantly
Generate random API keys and tokens locally with configurable prefix and length. This utility is perfect for development keys, test secrets, and temporary credentials.
Options
Token output
🚀 Quick Examples
💡 Common Use Cases
Development & Testing
Generate test API keys for local development environments and sandboxed testing workflows.
Integration & Deployment
Create secure tokens for service-to-service authentication and API integrations in production.
OAuth & Token Rotation
Generate refresh tokens and OAuth credentials for secure authentication and access token rotation.
Microservices & APIs
Create service-specific API keys for microservice communication and internal API rate limiting.
✓ Best Practices
Use Prefixes for Key Types
Use prefixes like sk_ (secret), pk_ (public), or test_ to identify key types at a glance.
Store in Environment Variables
Never hardcode API keys. Use .env files and secret managers (AWS Secrets, Vault, etc.).
Rotate Keys Regularly
Generate new keys periodically and deprecate old ones to reduce breach impact.
Revoke Exposed Keys Immediately
If a key is accidentally committed or exposed, deactivate it in your API provider immediately.
Limit Key Permissions
Generate keys with minimal permissions needed for their purpose. Use scopes and roles wisely.
🔗 Related Utilities
🔒 Why This Tool Works in Your Browser
Generating API keys in your browser ensures your cryptographic tokens never traverse the internet or touch a third-party server. This is critical because API keys are authentication credentials—if transmitted to a cloud service, attackers could intercept them or the service operator could abuse them to access your systems. Browser-based generation means the entropy source and key construction happen entirely on your device, contained within your control. This matters especially for developers managing multiple API keys across different services. Cloud-based generators create a database entry and potential liability; they require trust in the service provider's infrastructure, logging practices, and regulatory compliance. Local generation eliminates this attack surface entirely. Your keys remain yours and yours alone, never exposed to surveillance or breach. This approach respects the principle that authentication credentials should never be exposed to intermediaries, protecting your entire application ecosystem from unauthorized access through compromised key management.