Setting image position using SVG/PNG metadata?

Hi, is there any metadata I can set in PNGs or SVGs so that they already have a default size and position when imported into my Spreadshop?

I know that I can use the product templates to save position, but then it also saves what kind of products are used and I will need to create a lot of templates for my different images.

I have been using the Productor add-on for Chrome to help out somewhat, but it seems to be broken now. I’m trying to do some scripts myself instead, but built-in features would be much better.