When browsing wallpapers there are wallpapers of different sizes oriented in both landscape and portrait. Currently the search results only shows a thumbnail in landscape format. This isn't very ideal for the portrait oriented wallpapers as you can't see the full picture in the thumbnail. The same goes for those ultrawide wallpapers.
Wouldn't it be better if Wallhaven used a masonry layout for the search results instead? Good examples of sites using this masonry system are Google Images and Pinterest.