Basic Auth Generator

Generate HTTP Basic Authorization header by encoding username and password as Base64. Quickly create credentials for API testing and development

Credentials
Generate HTTP Basic Authorization header by encoding username and password as Base64. Quickly create credentials for API testing and development
Authorization Header
Copy the exact Authorization header value for fetch calls, API clients, or manual requests.
Basic QWxhZGRpbjpvcGVuIHNlc2FtZQ==
cURL Example
Start with this ready-to-run curl command, then replace the example URL if needed.
curl -H "Authorization: Basic QWxhZGRpbjpvcGVuIHNlc2FtZQ==" https://api.example.com/protected

What is Basic Auth?

Basic Auth puts username:password into the Authorization header after Base64 encoding it. It is simple and widely supported, but Base64 is only an encoding step, not encryption.

What this tool generates

  • An Authorization: Basic ... header you can paste into API clients.
  • A ready-to-run curl example for quick testing.
  • Everything runs locally in the browser.

What to keep in mind

  • Use HTTPS whenever you send Basic Auth credentials.
  • Anyone who sees the header can decode the original username and password.
  • Basic Auth is convenient for internal tools, staging environments, and quick API checks.