Free online tool
API Key Generator
Generate random API keys and developer tokens in your browser with length, prefix, and character-set options. Free token generator for testing and development.
Generated output runs in your browser. Where available, the tool uses Web Crypto; it does not use a physical true-random source and does not intentionally store generated results on our server.
How to use
- Choose a prefix if useful for the project or environment.
- Set the token length.
- Select allowed character sets or enter a custom set.
- Generate tokens and store real secrets securely.
Examples and use cases
Useful for development placeholders, testing tokens, fixture data, local prototypes, and examples where you need API-key-shaped strings. Prefixes can make non-production keys easier to identify.
Do not expose real production secrets in client code, logs, screenshots, or public repositories. Store production API keys in a secret manager or secure backend, not in this browser page.
API keys, passwords, and random strings
API keys are application credentials that must be validated, stored, rotated, and revoked by your own system. Passwords are human account credentials and should be managed with a password manager. Random strings are flexible values for labels, fixtures, and test data.
FAQ
Are these real API keys?
No. They are generated token strings. Your app must still validate, store, rotate, and revoke keys securely.
Why use a prefix?
Prefixes make test keys easier to identify by environment, project, or local fixture.
Can I control length and character sets?
Yes. Use the length field, built-in character toggles, or a custom character set.
Where should production keys be stored?
Use a trusted secret manager or secure backend storage. Do not expose real production secrets in public code or screenshots.
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