Free API Key Generator

Yes, the tool uses the Web Crypto API (crypto.getRandomValues) which provides cryptographically secure pseudo-random numbers suitable for security applications.

For general API authentication, 32-64 characters is recommended. This provides sufficient entropy to prevent brute force attacks. Match the length to your security requirements.

Prefixes help identify key types (public vs secret) and environments (test vs production). This reduces errors and makes key management easier. Many popular APIs use this pattern.

Store keys in environment variables or secret management services. Never commit keys to version control. For verification-only use cases, store hashed versions of keys instead.

Extremely unlikely. With sufficient length (32+ characters), the probability of collision is astronomically small - less than the chance of hardware failure while generating.

Yes, this tool uses the browser's built-in cryptographic API and runs entirely locally. Keys are not transmitted anywhere. For highly sensitive keys, use server-side generation in controlled environments.