Secret/API Key Generator
7 toolsGenerate a random hex or Base64 secret key.
Runs in your browser — your files and text stay on your device
Generate a random hex or Base64 secret key for API keys, tokens and signing secrets. Longer keys are stronger, and a secret should be stored in an environment variable or secrets manager, never committed to code. It's generated in your browser with a secure random source.
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Length (bytes)32
How to use this tool
- 1Choose the key length in bytes and an encoding.
- 2A random secret generates automatically.
- 3Copy it into an .env file or secrets manager.
Frequently asked questions
What's a good length for an API secret?
32 bytes (256 bits) is a strong default for most session secrets and API keys.
Is this cryptographically secure?
Yes — it uses crypto.getRandomValues, the Web Crypto API's secure random source.
Is my generated secret sent anywhere?
No — everything happens locally in your browser.