HTTP Basic Auth Generator
Encode and decode HTTP Basic Authentication headers from username and password. Free, private, runs in your browser.
Base64 token
—Authorization header
—HTTP Basic Auth concatenates username:password and base64-encodes the result. The whole token is sent in the Authorization header on every request.
Anyone who captures the request can decode the credentials trivially — only use Basic Auth over HTTPS, and prefer per-app tokens or OAuth where possible.