Wife of Mickey, Artie, Frank and Jack provides online image (6)
I believe the answer is:
avatar
'online image' is the definition.
(I've seen this in another clue)
'wife of mickey artie frank and jack' is the wordplay.
I cannot really see how this works, but
'jack' could be 'tar' (both are informal terms for sailor) and 'tar' is present in the answer.
The remaining letters 'ava' is a valid word which might be clued in a way I don't see.
This may be the basis of the clue (or it may be nonsense).
'provides' is the link.
Can you help me to learn more?
(Other definitions for avatar that I've seen before include "Screen icon" , "Incarnation; film (2009)" , "Blockbuster film" , "Person seen as embodying a particular ideal" , "heavenly body!)" .)