Question about retina?

Question

css

Hello. Let's imagine there is a site with a backing, a picture on the backing. The question is, what size should it be in order to be displayed correctly on retina 2 @ displays, if the original image is 1920x2500? Twice as much?

Answer 1

From a presentation by Vadim Makeev Clearly and sharply
Prepare a photo 1.5–2 times larger than required
Save with a much bolder compression, up to 20-30%
Reduce its size to the desired size when pasting
The file will be either slightly larger or even smaller
External quality and detail photos will rise

Answer 2

The Designer's Guide to DPI is a great article on the topic.