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Basic Auth Header Generator

Convert username and password into an Authorization Basic header.

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Credential input

Authorization: Basic base64(username:password)

Password strength

Fair

Request examples

curl

curl -X GET "https://api.example.com/v1/items" \
  -H "Authorization: Basic Z29nb3RlbTp1c2VmdWwtdG9vbHM="

fetch

await fetch("https://api.example.com/v1/items", {
  method: "GET",
  headers: {
    Authorization: "Basic Z29nb3RlbTp1c2VmdWwtdG9vbHM="
  }
})

HTTPie

http GET "https://api.example.com/v1/items" "Authorization: Basic Z29nb3RlbTp1c2VmdWwtdG9vbHM="

Before you use it

Processed in your browser

The username and password are not sent to the server. This page only displays the Base64 string created in the browser.

  • Basic Auth does not encrypt the password. Without HTTPS, the credential can be read in transit.
  • Do not paste the token into public logs, screenshots, or issues. Base64 can be decoded back to the original value.
  • Regenerate the header whenever the password changes. For long-lived services, consider API keys or OAuth.

How to use

Convert username and password into an Authorization Basic header.

Usage notes

  • Add your input, run the tool, and review the result below.
  • Copy or download the result for blog posts, work documents, and content production.
  • Review the result once more before using it in important public materials.

Frequently asked questions

Are files uploaded to the server?expand_more

Files and text are processed in your browser and are not uploaded to the server.

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