./prontouso.com

NETWORK TOOLS

Basic Auth Generator

Quickly create the base64-encoded string needed for HTTP Basic Authentication from a username and password.

Tool statusRuns in your browser
Preview

Basic Auth Generator

Authorization header

How it works

  1. Enter your input

    Fill in the values, paste your text, or upload the file this tool works with.

  2. See results instantly

    Most tools update live as you type; a few use a single button. Either way, the result appears right on this page.

  3. Use your results

    Copy, download, or share what the tool produces — you're always in control of the output.

Privacy and processing — Runs locally in your browser. This tool does not upload your input.

What is Basic Auth Generator?

Build the base64-encoded Authorization header value for HTTP Basic Authentication from a username and password.

UNDERSTAND THE TOOL

How to generate a Basic Authentication header

What Basic Auth is

HTTP Basic Authentication (RFC 7617) sends credentials as "username:password", base64-encoded, inside an Authorization header — Authorization: Basic <encoded value>. Base64 is an encoding, not encryption, so this scheme is only safe to use over HTTPS.

How to use it

  • Enter the username and password.
  • Copy the generated "Basic ..." header value.
  • Send it as the Authorization header on your request (in curl: -H "Authorization: Basic ...").

Security considerations

Because base64 is trivially reversible, never send this header over plain HTTP, and avoid Basic Auth entirely for anything sensitive if the API offers a token-based alternative.

Header format

Authorization value
Basic base64(username + ":" + password)

demo:s3cret

The username and password are joined with a colon before UTF-8 Base64 encoding.

Authorization: Basic ZGVtbzpzM2NyZXQ=

Credential string notes

The generated header is just Base64 text for username:password. Treat it like a credential and avoid leaving it visible after copying.

Frequently Asked Questions

Is Basic Auth secure?

Only when used over HTTPS. The credentials are merely base64-encoded, not encrypted, so anyone who can read the raw request over plain HTTP can recover them instantly.

Does this work with accented letters or emoji in the password?

Yes. The username and password are UTF-8 encoded before being base64-encoded, so any Unicode character is handled correctly.

Where does this header go?

In the Authorization request header, exactly as generated, e.g. Authorization: Basic dXNlcjpwYXNz.

Is Basic Auth encrypted?

No. Basic Auth is only Base64-encoded. It should be used over HTTPS and treated like any other credential.

Related Tools