Генератор Basic Auth

(Документация на английском)

What it does

Builds an HTTP Authorization: Basic <token> header live from a username and password (

Base64Base64An encoding representing binary data as 64 safe ASCII characters, so it survives transport through text-only channels. It encodes — it does not encrypt.

-encoded, UTF-8 safe), decodes an existing header back into its fields, and flags credential mistakes before they ship.

How to use it

1. Type a username and password — the header builds live in the output panel.
2. Already have a header? Open Paste an Authorization header, paste it, then Parse & load to decode it into the fields.
3. Copy the header, download it as basic-auth-header.txt, or share the URL — your input is encoded in the link.

Examples

• user / pass → Basic dXNlcjpwYXNz
• Paste Authorization: Basic dXNlcjpwYXNz → loads user / pass into the fields
• Username a:b → warns: ":" in username — credentials become ambiguous

Good to know

• Private: encoding/decoding is local — credentials never leave your browser.
• Basic Auth is not secure over plain HTTP — pair it with HTTPS. Prefer tokens/OAuth for new APIs.
• A username containing : is flagged because the user:pass split happens at the first colon — conforming parsers silently truncate the username.
• Non-ASCII passwords are flagged per RFC 7617: its default charset is UTF-8, but many servers assume ISO-8859-1/US-ASCII and mangle or reject such bytes.
• Passwords containing colons are handled correctly.
• Related tools:

  Base64Base64An encoding representing binary data as 64 safe ASCII characters, so it survives transport through text-only channels. It encodes — it does not encrypt.

  , HTTP Status Codes.