Basic Auth Header Generator

Encode username and password into an HTTP Basic Authorization header value for API testing.

Runs entirely in your browser — nothing is uploaded or stored on any server.

About Basic Auth Header Generator

Updated Mar 2025

Enter a username and password to generate the correct HTTP Basic Authorization header: Authorization: Basic <base64(username:password)>. Also decodes existing Basic Auth headers. Essential for API developers and testers who need to manually set auth headers in curl commands or Postman.

Frequently Asked Questions

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