HeldInTheMoment said:
What is the best resolution/image size for example photos to be displayed on a website?
DEPENDS a bit by what that actually means. If you want to have a web site that allows people to click on photos, and to see, or to download, high-quality example images from a special Gallery or Samples page or pages, something in the 600k to 1.2 megabyte .JPEG image format, at around 1,600 pixels for talls and 2,400 pixels for "wides"...those sizes will show your images as being high-quality images.
A good example might be say, Facebook, where regular images are 900 pixels tall or wide, but for people who have checked "Upload in High Quality", their HQ images, for followers who hit the
Download command on Facebook, they are then sent a 1,904-pixel long-dimension image, which really DOES look much, much better than a highly compressed, 900-pixel "regular quality" image.
Great big images, from today's 24MP Nikons, make people have to scroll and scroll to examine an image; my feeling is that 2,000- to 2,400-pixel wide (longer axis) .JPG im,ages look quite good to most people; an image that is scaled that size, and that has 600k or more of file size, will look like a "pro camera/pro photographer" type of image to most people. AND, it is also not so,so overly large that it will run into difficulty being down-razzed by most algorithms I've seen.
Again...not sure, exactly, what you had in mind; some people like to have a feew "sample" images that viewers can download. Keep in mind that in 2016, many of those will be seen on an Android or iPhone, as a TALL image....talls look like crap on many horizontally-seen computer monitors....but on an iPhone or Droid, a nice TALL image looks great!