API Key Generator

About API Keys

A client-side tool for generating cryptographically secure API keys. Supports multiple output formats commonly used by REST APIs, OAuth providers, and SaaS platforms.

Why generate API keys locally?

API keys must be kept secret. Generating them entirely in your browser ensures they never travel over the network. Use for development, testing, or when provisioning keys for your own services.

Key Features

• Multiple formats: Hex, Base64, alphanumeric, Bearer, sk_ style, or custom prefix.
• Cryptographically secure: Uses Web Crypto API for true random generation.
• Bulk generation: Create multiple keys at once for testing or seeding.

How to Use

1. Select the desired format (hex, Base64, Bearer, sk_, or custom).
2. Set the key length and optional prefix. Click Generate.
3. Copy the generated keys. Never share or commit them to version control.