Here I yanked an image from Chromium.   The system works!  🤩

(See the manual(s) for details.)

Other obvious modes is html-mode (for text/html and images) and
... image-mode?  I guess?  The latter could perhaps just prompt for a
file name and save it (and then display it).

-- 
(domestic pets only, the antidote for overdose, milk.)
   bloggy blog: http://lars.ingebrigtsen.no