🗝️API Key Generator

Generate random API keys and tokens in various formats.

Format

Bytes: 32

Prefix (optional)

Count: 3

About API Key Generator

Generate cryptographically secure random API keys and tokens in multiple formats: hex strings, Base64-encoded keys, alphanumeric tokens, and prefixed keys (e.g. sk_live_...). Configure key length from 16 to 64 bytes and copy individual keys or batch-generate multiple at once.

How to Use API Key Generator

1
Choose key format
Select hex, Base64, alphanumeric, or prefixed format depending on your API's requirements.
2
Set key length
Choose the number of random bytes — 16 bytes (128-bit), 32 bytes (256-bit), or 64 bytes (512-bit).
3
Generate and copy
Click Generate and copy one or more API keys to use in your application.

Common Use Cases

Generating API keys for a new REST API or web service
Creating secret keys for HMAC signing and JWT secrets
Producing test API credentials for development environments
Generating webhook secrets for payload signature verification

Frequently Asked Questions

Are the generated API keys cryptographically secure?

Yes — all keys are generated using the browser's Web Crypto API (crypto.getRandomValues), which produces cryptographically secure random bytes suitable for use as API keys and secrets.

What format should I use for my API keys?

Hex (lowercase) is widely used and easy to store. Base64 produces shorter strings for the same entropy. Prefixed keys (like sk_live_ or pk_test_) are common in commercial APIs and help users identify key type at a glance.