Basic Auth Generator

Create the HTTP Basic Authorization header from a username and password, plus cURL and fetch snippets.

Username

Password

Authorization header: Authorization: Basic YXBpLXVzZXI6czNjcmV0LXBhc3M=
Base64 value: YXBpLXVzZXI6czNjcmV0LXBhc3M=
cURL: curl -u 'api-user:s3cret-pass' https://api.example.com/
fetch header: headers: { Authorization: "Basic YXBpLXVzZXI6czNjcmV0LXBhc3M=" }

Base64 is encoding, not encryption — anyone who sees the header can read the password. Only use Basic authentication over HTTPS.

How to use basic auth generator

1Enter your valuesFill in the fields — example values are already there to start from.

2Adjust the optionsChange the choices to match your situation. Results update as you type.

3Use the resultRead it, or copy it with the Copy button.

Only over HTTPS. The password is just Base64-encoded, not encrypted.

No, the colon separates the username from the password.

No. Everything is worked out in your browser and nothing you type is sent to a server.