๐ Basic Auth Header Decoder
Enter an Authorization header value in "Basic xxxx" format (or the bare base64 string) and decode it back into the original username and password. Handy for debugging APIs or reading logs.
How to use
- Enter the Authorization header value (with or without the "Basic " prefix).
- The decoded username and password appear automatically.
- An error message is shown if the value isn't a valid Basic Auth header.
FAQ
Is the "Basic " prefix required?
No โ you can paste it with or without the "Basic " prefix; both decode correctly.
What if the password itself contains a colon (":")?
Only the first ":" found is treated as the separator between username and password, so passwords containing colons decode correctly โ this matches the RFC 7617 specification.
Is the entered data sent to a server?
No. Decoding happens entirely in your browser and nothing is sent anywhere.