What is best size and quality for uploaded photos?
That is a question we get asked a lot, and the answer depends on a few factors and compromises. You want your website photos looking great, but you don't want slow-loading images. See post:
Optimizing Images for Photo Gallery Websites
2048 - 2880 px / long side
65 - 75% / compression
Target file size
~ 300 kb
200 - 700 kb / varies depending on photo detail