Generate Your API Key
Use our free tool to create a strong, random API key for your application or service.
What is an API Key?
An API Key is a unique string used to identify and authenticate an application or user when it calls an Application Programming Interface (API). The key is sent with the request and tells the API server "who" is making the call.
API keys are used to control access, track usage (for billing or rate limiting), and maintain security. They should be kept secret and treated just like a password.
How Does This Tool Work?
This tool uses your browser's `crypto.getRandomValues` API to generate a high-entropy, unpredictable string of your desired length and format. It also allows you to add a common prefix (like `sk_live_` for a Stripe "secret key live") for readability. All generation is done locally in your browser.
Why Use Utils Hub's API Key Generator?
- Secure: Uses a cryptographically secure random number generator.
- Private: Your generated keys are never sent to our servers.
- Flexible: Customize length, character set, and add a prefix to match your needs.
Frequently Asked Questions (FAQ)
How should I store my API keys?
Never hard-code API keys directly in your source code (especially if it's public on GitHub!). Store them in environment variables (`.env` files) or a secure secrets management system (like HashiCorp Vault, AWS Secrets Manager, or GCP Secret Manager).
What's a good length for an API key?
A length of 32 to 64 characters is typically very secure, especially when using an alphanumeric or Base64 character set. This provides a massive amount of entropy, making them impossible to guess.
Related Tools on Utils Hub
- Password Generator – For user passwords.
- GUID Generator – For unique database IDs.
- Salt Generator – For password hashing.