Basic auth header generator
Turn a username and password into an HTTP Basic Authorization header, with a ready curl command. It encodes in your browser (0 uploads, works offline), so credentials never leave your device.
How to use it
- Enter your input above.
- The result appears instantly on your device.
- Copy or Download it.
FAQ
How do I create a Basic Auth header for free?
Type username:password on this page and the Authorization header appears instantly, Base64-encoded in your browser with no upload — plus a curl example you can copy. Base64 is encoding, not encryption, so still send Basic Auth only over HTTPS.
Is Base64 the same as encryption?
No. Base64 just represents the credentials as text; anyone can decode them. That is why Basic Auth must only be used over HTTPS, where the whole request is encrypted in transit.
Are my credentials uploaded?
No. Encoding happens locally and nothing is stored or logged; it works offline, which is exactly why you should encode secrets on your own device.
What is the header format?
Authorization: Basic followed by the Base64 of username:colon:password, per RFC 7617.
Limits
Encodes to a header; it does not send any request. Use only over HTTPS.
Related
The HMAC generator signs webhook payloads; the JWT decoder inspects bearer tokens.
Bookmark this page (Ctrl+D, or ⌘D on Mac) or install the app — it works offline the next time you need it.