Random Secret Generator
Generate random, unpredictable secret keys for applications, APIs, sessions, JWT signing, and environment variables. Everything runs locally in your browser.
Generated Key
Secure, random, and client-side generated.
Output format: Custom character set
What Is a Random Secret Generator?
A random secret generator creates unpredictable strings for software authentication, signing, encryption, and session protection. Unlike a password generator designed for people to remember, a random secret key is made for machines and should be stored in a secrets manager.
Why Generate Random Secrets Here?
Web Crypto API
The browser supplies cryptographically secure randomness through crypto.getRandomValues().
Private by default
The generated value stays in your browser. No signup, upload, server log, or key storage is required.
Flexible formats
Choose character, Base64, or hexadecimal output to match your framework and configuration requirements.
How Long Should a Random Secret Be?
Choose the length required by your framework or algorithm, then use a different random value for every environment and credential.
32 characters or bytes
A strong baseline for general application secrets, session values, and many API credentials.
48–64 characters or bytes
A practical choice for sensitive systems, higher-value API access, and stronger JWT algorithms.
128 characters or bytes
Useful when a platform allows longer values and you want a generous entropy margin.
Random Secret Generator FAQ
Is this random secret generator secure?
It uses the Web Crypto API and crypto.getRandomValues() for cryptographically secure random values. Generation happens locally in your browser, so keys are not sent to our server.
Can I use these random secrets in production?
Yes, provided you store them correctly and follow the requirements of the framework or algorithm using them. Keep secrets in environment variables or a dedicated secrets manager, never in source control.
What is the difference between a random secret and an API key?
A random secret describes how a value is generated, while an API key describes a credential used to identify an API client. Use the API Key Generator when you need client-specific access, scopes, and revocation.