EXPORT JPG NAMED BY PAGE SIZE
it would be very usefull if we could export jpgs from indd. file (contains different page sizes, 1200x628, 760x600, etc..) named by different page sizes like you did with export PDF files.
100% Agree with this, I create web ads and it's so frustrating not being able to export them with easy file names like this, I tried using section prefix in page numbering but that doesn't export. Apparently you can use a script but I don't know which ones to trust, something needs to be built in!
For now, see this thread. In the comments there's a link to some scripts I created that might help you with this: