Maximum picture size?

[Milennin]

I'm making a custom menu that has a picture of a list of selectable items that can be scrolled through stretch beyond the limits of the screen. Is there a maximum size I should be aware of, which at that point won't load the full image into the game anymore? Since I do plan on expanding the list of selectable items at some point...

 

[Poryg]

Not really a maximum, I'm aware of, but it's generally not a good idea, because png RGBA files take 4 bytes per pixel, meaning larger images have a ridiculous filesize and as such slow loading.