I am aware. But it’s not doing that. It shows the same low resolution file on an iPhone X, iPad Air, Galaxy 9 and MacBook with retina screen as it does on a standard 1080p screen. As I described in the original post it does load the correct file when scrolled down. As I said; it seems the theme is not recognizing it should load the retina files. It used to show the correct files without any problems. Without any changes to for example plugins it stopped doing that. For as far as I can trace it changed after an update to the theme.

• This reply was modified 7 years by EnzioArdesch.

Yes I am aware off that documentation, and have had that enabled since I published the site. The retina files exist on the server but are not being loaded. For example; the big image (MX9) of the Big Grid loads the regular sized 741×486 image. Instead, it should load the 1482×972 image. Simply changing the source url in a HTML inspector shows the right image. (The same happens in the tagDiv composer.) It would seem that that theme is not recognizing it should load the retina files.

It doesn’t look good on my side. It’s is not particularly bad on a normal 1080p screen. But on a retina device for example it is definitely noticeable. I have already tried disabling all plugins (and regenerating all thumbnails during that time) but that doesn’t change anything.

What is the connection with WonderPlugin? I don’t use that plugin.

Is there anyway I can change it in the functions.php file or something like that? Pictures need to be a central part of my site and this cropping is not really fitting. Other block’s don’t work in my design.