Mk I know a lot of people don't look at my profile but I have a question pertaining this site so why not?

I want to upload a photo that I took lengthwise with my camera. My camera automatically saves it lengthwise and when I upload it to the computer, that's how it looks. However when I try uploading it to this website, it is turned onto it's side. I've tried saving it on my desktop lengthwise but it doesn't work.

Any tips on how to get it to show up the right way?