HTTP Basic Auth Header Generator

What is a HTTP Basic Auth Header Generator?

Generate standard HTTP Basic Authentication headers (`Authorization: Basic dXNlcm5hbWU6cGFzc3dvcmQ=`) from a username and password.

Why Use This Tool?

API Testing: Generate `Authorization` headers for testing REST APIs in cURL, Postman, or HTTP clients.
Web Server Config: Test authentication headers before configuring Nginx or Apache `.htaccess` rules.
Microservices: Construct basic auth strings for internal service-to-service calls.

How to Use

Enter your Username and Password.
The tool formats `username:password` and encodes it to Base64 instantly.
Copy the generated `Authorization: Basic ...` header string.

Real Working Example

Input:

Username: admin | Password: secretpassword123

Output Result:

Authorization: Basic YWRtaW46c2VjcmV0cGFzc3dvcmQxMjM=

Important Technical Details & Features

RFC 7617 Compliance: Follows official HTTP Basic Authentication Scheme specifications.
UTF-8 Unicode Encoding: Supports special characters inside passwords.
100% Client-Side Privacy: Passwords never leave your device—zero server transmission.

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Frequently Asked Questions

Is Basic Auth encrypted?

No, Basic Auth is Base64 encoded (not encrypted). Always use HTTPS to protect Basic Auth headers.

Are my credentials uploaded to a server?

No. All Base64 encoding occurs client-side inside your browser.

Can I copy the full HTTP header string?

Yes, copy the complete "Authorization: Basic ..." header with a single click.

Is it free?

Yes, 100% free.

What is the main function of Basic Auth Header Generator?

Generate Base64 encoded HTTP Basic Authentication headers (Authorization: Basic .) from username and password. This generator produces basic auth header data instantly in your browser.