API Key Generator
NewGenerate cryptographically secure API keys in multiple formats: HEX, Base64URL, Alphanumeric, and UUID v4. Add a custom prefix to match your naming conventions (e.g., sk_, pk_, api_). All keys are generated using the Web Crypto API for true randomness.
Length:
Click "Generate Keys" to create API keys in multiple formats.
How to Use API Key Generator
- 1Set an optional prefix
- 2Choose the key length
- 3Click Generate Keys
- 4Copy any format
Your Privacy is Protected
API Key Generator runs entirely in your browser. Your files and data are never uploaded to any server, never stored, and never shared. Everything happens locally on your device using secure browser APIs.
No server uploadNo account required100% freeWorks on all devices
Frequently Asked Questions
Are these keys truly random?
Yes. Keys use crypto.getRandomValues() from the Web Crypto API which provides cryptographically secure random bytes.
Why Use This Tool?
Files never leave your device
No upload to any server
Instant processing in browser
100% free, no account needed
Tags
api key generatorgenerate api keyrandom api keysecret key generatortoken generator