Converting an image into data sendable data

Im trying to send images between arduinos wirelessly with maybe an nrf24l01 module. How can i convert an image into sendable data?

I do not understand your problem. What is your image if it is not a bunch of bytes? Where is your image stored?

most likely you'll break down your data for sending in the same way this FTP library does.

Image bytes are "sendable data". The radio does not care what the bytes contain.