Is it possible in any way to upload to database a displayed image on a page using app connect?

I have a image I call via api and it displays on a page. Can I, in some way use form insert or update to upload this image to a folder and save the db link like one would with a file field? I see the file field on forms only have a static value and my value will be dynamic meaning made up from the basic api call in the img source tag and then additional parameters as selected by the user.