Basic Auth Header Generator
Build or decode an HTTP Basic Authorization header.
Works Offline
Privacy First
No Login
No API
Credentials
Result
About the Basic Auth Header Generator
Encode a username and password into an HTTP Basic Authorization header, or decode an existing header back into its username and password. Includes ready-to-copy curl and fetch snippets.
Examples
Encode credentials
admin:secret123Output
Authorization: Basic YWRtaW46c2VjcmV0MTIzKeyboard shortcuts
- Copy the main outputCtrl / ⌘ + Shift + C
- Download the resultCtrl / ⌘ + S
- Share this toolCtrl / ⌘ + Shift + S
- Reset the inputsAlt + R
- Open the tool search paletteCtrl / ⌘ + K
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Frequently asked questions
Version 1.0.0 · Updated 2026-08-10 · Runs entirely in your browser