Basic Auth Generator

Generate the full Authorization: Basic header and raw Base64 token from username and password credentials. Fast, secure, and entirely in your browser.

Credentials
Authorization Header 0 characters

When to Use This Tool

Use this generator whenever you need a ready-to-copy Basic Auth header or the raw Base64 token:

  • API Development & Testing

    Generate a complete Authorization: Basic header for curl or Postman while testing protected API endpoints.

  • curl Command Preparation

    Copy only the raw Base64 token when you need to build the Authorization header yourself in curl commands, docs, or code.

  • Reverse Proxy Configuration

    Verify credentials with the password toggle before copying the header into nginx, Apache, reverse proxy, or CI configuration.

  • Security Testing

    Generate multiple test headers quickly, then clear the form and focus the username field for the next credential pair.

  • Documentation & Tutorials

    Create accurate example headers and tokens for tutorials, onboarding docs, and API reference material.

Frequently Asked Questions

How do I use this app?
Enter or paste the required input, adjust any options, run the primary action, and review the result. Use the Clear/Reset control to start over.
Is this app free to use?
Yes. The app is free to use and does not require an account.
What happens to my input data?
The app MUST NOT store user-provided input. If any network request is required for a feature, the app MUST clearly disclose it in the Help section.
Why am I getting an error or unexpected output?
Most issues come from invalid input or incompatible options. Verify the input format, try the default settings, and use Clear/Reset before trying again.
Where can I find instructions and troubleshooting tips?
Use the in-app Help panel. It MUST explain inputs, options, and common mistakes, and it MUST be usable with a keyboard (including closing with Escape).