What is the optimal image size for a post list page?

Question

Images

Hello.
What is the optimal image size to choose so that users are not overloaded with data, and so that the picture looks good on retina displays? We are talking about the main page, on which there are announcements of records and images. I'm more interested in the width in pixels. Now the width is set to 1400 pixels, the size of 220 kb looks great on the iPad. In total there will be 5 records on the page at the same time

Answer 1

Well, if you really need it to be beautiful on the retina - the real physical size in pixels * 2. But in general, WordPress already knows how to show the necessary images to the retina. https://make.wordpress.org/core/2015/11/10/respons...