I need a website with 1 000 000 pixels

I need a website with 1 000 000 pixels, which are meant to be bought by internet users and filled with a .png file (for example)

- It should be possible to buy more pixels at once

- It should be possible to upload photos (also with URLs) in the pixels

- The website should have more than 1 paying option

Also, I need help with hosting the website because I'm quite inexperienced