Generators
API Key Generator
Generate API keys
Choose a format, optional prefix, and length, then generate one or many keys instantly.
Optionsgenerated locally in your browser using crypto.getRandomValues — nothing leaves this page
Format
Prefix optional
Length random part, chars
Quantity
Entropy per key:191-bitStrong
Tool Features
Secure API key generation with custom formats, prefixes, and an entropy meter
Cryptographically Secure
Keys come from the Web Crypto API with unbiased sampling
Multiple Formats
Base62, hex, and URL-safe Base64 alphabets
Custom Prefix & Length
Add a recognizable prefix and tune the random length
Entropy Meter
See the bits of entropy behind every key you generate