What is an API key generator?
An API key generator creates random tokens that applications can use to identify clients, scripts, services, or development environments.
Free Tool
Free API Key Generator
An API key generator creates secure random tokens for development, testing, scripts, webhooks, and service integrations.
Generate URL-safe keys, hexadecimal tokens, alphanumeric secrets, or UUIDs locally in your browser with no signup and no server upload.
Generator
Configure the token
Estimated entropy
192 bits
Format
URL-safe base64
Output
Generated API keys
Choose a format and generate keys. Nothing is sent to a server; keys are created locally in your browser.
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FAQ
API key generator questions
Are these API keys generated securely?
Yes. The tool uses the browser Web Crypto API to create cryptographically strong random values on your device.
Do generated API keys leave my browser?
No. Keys are generated client-side and are not uploaded, logged, stored, or sent to Code Card servers.
What API key length should I use?
Use at least 32 URL-safe characters for production-style secrets. Longer keys add more entropy and are better for high-value credentials.
Can I add a prefix to API keys?
Yes. Prefixes like sk_live or dev help teams identify key type and environment without reducing the random body of the token.