iCloud photo trouble

[kCookTester]

someone emailed me a picture that I would like to upload to a website.

I can see the photo on my iPhone and on my Macbook.
I can save it to photos on my phone but not on the macbook.

I can't upload to the website from my phone, because it only accesses the mobile site and the feature isn't avaialble.

i'd saved it to iCloud but i can't see if when i they to upload it.

It's all a big fog!!!

Please can anyone help me?

[kCookTester]

Maybe you are all as confused as I am