Basic Auth Header Generator
Generates an HTTP Basic Authentication header from a username and password by base64-encoding the credentials, ready to paste into API clients or curl commands.
Basic Auth Header Generator — Free Online Tool
Generates an HTTP Basic Authentication header from a username and password by base64-encoding the credentials, ready to paste into API clients or curl commands.
How to use the Basic Auth Header Generator
- Open the tool above — it runs entirely in your browser, so your input never leaves this page.
- Paste or type your input into the field, then press the relevant button (e.g. Encode / Decode, Generate, or Convert).
- Copy the result from the output area with the copy button orCtrl/Cmd + C.
- No signup, no upload, and no tracking — repeat as often as you need.
Frequently asked questions
Is the Basic Auth Header Generator free to use?
Yes. The Basic Auth Header Generator is completely free, with no signup, no ads inside the tool, and no hidden limits.
Does the Basic Auth Header Generator upload my data?
No. The Basic Auth Header Generator processes everything locally in your browser. Your input is never sent to a server, so it stays private even on shared devices.
Does the Basic Auth Header Generator work offline?
After the page loads, the Basic Auth Header Generator runs entirely in your browser, so it keeps working without a network connection.
Free & private — why use this Basic Auth Header Generator
The Basic Auth Header Generator runs 100% client-side in your browser. Your data is never uploaded to a server, no account is required, and the tool is completely free. It works offline once the page has loaded and is part of a growing collection of privacy-first developer utilities.