Question about large (high res) images.

Newbie here. ^_^

Just wondering (BEFORE I mess up a post and look silly doing it), if a person has a high res image that they want to share for Steemit users to be able to print out, can they post images that are very large, without them being actually resized?

I have some images for printing that I'd like to share if it's possible, without loosing the high resolution. They're meant to print on standard printer paper, but the resolution is something like 300 dpi, so on the screen it would be pretty big.

Not really sure about the best way to do this...