Basic Auth Generator
Generate an HTTP Basic Authorization header from credentials.
Output will appear here...About Basic Auth Generator
The Basic Auth Generator turns a username and password into a complete HTTP Basic Authorization header, Base64-encoding the credentials in the required 'user:pass' format. It's the quick way to build the header for a curl command, API test, or client config. Encoding runs entirely in your browser, so your credentials are never transmitted. Remember Basic Auth is only as safe as the HTTPS it travels over — for tokens, see the Bearer Token Parser.
How to Use
- 1Open Basic Auth Generator and paste or type your data into the input area.
- 2Adjust any available options to match the result you want.
- 3Your output is generated instantly — no button-clicking required for most tools.
- 4Use the Copy or Download button to save your result.
Common Use Cases
- Inspecting JWT claims while debugging authentication
- Converting cURL commands into fetch or Axios code
- Building and parsing query strings and tracking URLs
- Looking up HTTP status codes during API development
Frequently Asked Questions
How is the Basic Auth header built?
Your username and password are joined with a colon, Base64-encoded, and prefixed with 'Basic ' to form the Authorization header value that servers expect for HTTP Basic Authentication.
Is Basic Auth secure?
The credentials are only Base64-encoded, not encrypted, so Basic Auth must always be sent over HTTPS. Anyone who intercepts the header on plain HTTP can trivially decode it.
Is Basic Auth Generator free to use?
Yes. Basic Auth Generator is completely free with no sign-up, no subscription, and no usage limits. Every tool on CodeUtilityKit is free forever.
Is my data safe when I use Basic Auth Generator?
Absolutely. Basic Auth Generator runs entirely in your browser. Your input is processed locally with JavaScript and is never sent to, stored on, or logged by any server — so it is safe even for private or sensitive data.
Features
- Run Basic Auth Generator instantly, right in your browser
- 100% private — your data never leaves your device
- Copy the result to your clipboard in one click
- Free and unlimited with no account or sign-up
- Clear, friendly error messages when something is wrong
- Works on desktop and mobile, even offline after first load
Related tools: Bearer Token Parser, Base64 Encoder.