On of the themes you tested (I guess not in preview, but just switching it active) had only small image sizes registered via add_image_size()
. There’s a very popular plugin that you can use to “fix” that: Regenerate Thumbnails.
On of the themes you tested (I guess not in preview, but just switching it active) had only small image sizes registered via add_image_size()
. There’s a very popular plugin that you can use to “fix” that: Regenerate Thumbnails.