API Key Generator
Generate cryptographically secure API keys and tokens
For testing and development only
These keys are generated in your browser using crypto.getRandomValues() and never leave your device. However, for production use, generate keys server-side with proper key management.
Key Format
Quick Presets
Generate cryptographically secure random API keys for testing and development. All keys are generated locally in your browser using the Web Crypto API.
Why This Tool
When you need secure random strings for API keys, webhook secrets, or configuration tokens, using predictable patterns is a security risk. This tool generates cryptographically secure random strings using the Web Crypto API, ensuring true randomness without any server involvement.
How It Works
Choose your desired key length, character set (alphanumeric, hex, base64, or custom), and format. Click generate to create one or more keys. All randomness comes from crypto.getRandomValues() in your browser — nothing is sent to any server, and no key is ever stored.