API Key Generator: Random, Online, Free

API Key Generator

Generate secure, random API keys for your apps—free and no sign-up required.

Number of API Keys (1-500): API Key Length (bits): Type of Characters: Prefix (optional): Separator (if more than 1):

Strength:

How to Use This Tool

1. Set the Quantity: Choose how many API keys you want to generate (1–500).

Quick Option:

2. Generate: Click “Generate API Keys” to instantly create your keys.

3. Copy: Use the “Copy API Keys” button to grab and use them securely.

Custom Option:

2. Select Key Length: Pick your desired key strength, such as 256-bit.

3. Choose Character Type: Use letters, numbers, or a mix of both for added randomness.

4. Add a Prefix (Optional): Include a custom prefix to help identify your keys.

5. Set a Separator: Choose how to separate multiple keys—new line, comma, etc.

6. Generate: Click “Generate API Keys” to instantly create your keys.

7. Copy: Use the “Copy API Keys” button to grab and use them securely.

All keys are generated locally in your browser for maximum privacy and security.

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API Key Generator: FAQ

An API key is a unique identifier used to authenticate a user, developer, or calling program to an API. It helps control access and track usage.

Predictable or weak API keys are vulnerable to brute force attacks and unauthorized access. A secure API key protects your application, data, and users.

No. All key generation happens locally in your browser. We never transmit, log, or store any generated keys.

Yes, but always ensure your API key policies include rotation, expiration, and limited access scope for better security.

At least 32 characters is a common best practice for high entropy. Our tool lets you choose your preferred length based on your needs.

While both are used for authentication, tokens (like JWTs) often include more context and expiration logic. API keys are simpler and static but should still be protected and managed securely.

Never hard-code keys into your codebase. Store them in environment variables, secrets managers, or vaults, and limit their scope.