API Key Generator

Generate secure API keys

API keys and tokens are random secrets used to authenticate requests to a service. This generator creates them with the structure you need: a custom prefix such as the common sk_live style, a chosen length, and a character set of letters and digits, hexadecimal, an extended set with URL-safe symbols, or Base58 that omits easily confused characters. It uses the browser's cryptographically secure random number generator where available, so the keys have strong, unpredictable randomness suitable for real use.

You can generate many keys at once, which is handy for seeding test accounts or provisioning several services.

Using and protecting keys

A prefix makes keys easier to recognise in logs and configuration and helps tools detect leaked secrets, which is why many providers use one. Longer keys are harder to guess; thirty-two characters or more from a large alphabet gives ample entropy for most purposes. Base58 keys avoid the characters zero, capital O, capital I and lowercase l, reducing transcription errors.

Treat generated keys as secrets: store them securely, never commit them to source control, and rotate them if exposed. The keys are created entirely in your browser and are never transmitted, so they remain private to you.

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