What is the Basic Auth Header?
Build an HTTP Basic Authorization header. The Basic Auth Header is a free online tool that works instantly in your browser — no installation, no signup and nothing to upload. It sits alongside other Developer tools on DevNibble such as JWT Decoder, UUID Generator, Regex Tester.
How to use the Basic Auth Header
- Choose the options you want.
- Click Generate to create your output.
- Copy or download the results.
Features
- Runs 100% in your browser — your data is never uploaded or stored.
- Free forever, with no account, no ads and no tracking.
- Copy or download your result in one click.
- Fast and responsive on desktop, tablet and mobile.
Frequently asked questions
Is the Basic Auth Header free to use?
Yes — Basic Auth Header is completely free with no sign-up, no ads and no limit on how many times you can use it.
Is my data private when I use the Basic Auth Header?
Everything happens locally in your browser. Your input is never sent to a server, which makes Basic Auth Header safe to use with private or sensitive data.
How do I use the Basic Auth Header?
Choose your options and click Generate. Every result can be copied with a single click.
Are the generated values unique?
Basic Auth Header generates fresh values locally each time you run it, using secure randomness where it matters. Build an HTTP Basic Authorization header.