Basic Auth Header Builder
Base64-encode username:password into an Authorization: Basic header.
What is this tool?
HTTP Basic Authentication (RFC 7617) sends credentials as a base64-encoded username:password string in the Authorization header. This tool builds that header from a username and password, or decodes an existing header (or bare base64 string) back into its username and password, splitting on the first colon. Base64 is encoding, not encryption — this scheme is only safe over HTTPS.
How to use it
- Enter a username and password.
- Copy the base64 credentials or the full Authorization header.
- Or paste an existing header to decode it back into username and password.
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