All is not what it appears in the image below. There is a secret message hidden inside!

The message begins at byte $0$x$40$

It is encoded in the low$-$order bit in every $16$th byte

It is encoded from the English alphabet in $6-$bit binary according to the Base$64$ index table $($i$.$e$.,100100=\text{'}$k$\text{'})$

There are two exceptions to the Base$64$ index table: $111110=\text{'}\text{'}($the space character$),$ and $111111=\text{'}.\text{'}($the period character$)$

The English language message is $16$ characters long