The API Key Generator is an essential tool for developers creating APIs and web services. It generates random API keys in multiple formats (hex, base64, alphanumeric, UUID-like) with customizable length, prefixes, suffixes, and separators. Perfect for creating authentication keys, access tokens, and API credentials that match your specific requirements.
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Select a format (hex, base64, alphanumeric, or UUID-like), set the length, and optionally add a prefix, suffix, or separator. Click 'Generate API Key' to create a random API key. You can customize the format to match your API requirements.
The tool supports hex (0-9, a-f), base64 (A-Z, a-z, 0-9, +, /), alphanumeric (A-Z, a-z, 0-9), and UUID-like format (xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx). Choose the format that matches your API requirements.
Yes! You can add a prefix (like 'sk_' or 'pk_') and/or a suffix to your API keys. This is useful for identifying key types or adding your organization's identifier.
Yes! Set a separator character (like '-' or '_') and specify the interval. The tool will insert the separator at regular intervals, making the key more readable (e.g., xxxx-xxxx-xxxx).
Yes! Our API key generator is 100% free with no registration required, no usage limits, and no hidden fees. You can generate as many API keys as you need for your development work.
No, all API key generation happens locally in your browser. We don't store, save, or have access to any API keys you generate. Your privacy and security are completely protected.
Choose a format that matches your API requirements. Hex is common for simple keys, base64 provides more characters, alphanumeric is readable, and UUID-like provides a standard format. Consider your API's validation requirements when choosing.
The tool uses browser's Math.random() for generation, which is suitable for most use cases but not cryptographically secure. For production API keys, consider using crypto.getRandomValues() or generating keys server-side with a cryptographically secure random number generator.
API key length depends on your security requirements. Common lengths are 32-64 characters for hex/base64 keys. Longer keys are more secure but harder to manage. Consider your API's needs and user experience when choosing length.
Yes! Use the prefix field to add identifiers like 'sk_' (secret key), 'pk_' (public key), 'live_', 'test_', etc. This helps identify key types and is a common practice in API key management.
Hex uses only 0-9 and a-f characters (16 possible values), while base64 uses A-Z, a-z, 0-9, +, and / (64 possible values). Base64 provides more entropy per character, so shorter base64 keys can be as secure as longer hex keys.