Roy Tanck has released a web service '4K Desktop wallpaper generator ' that can randomly generate 4K resolution wallpapers for free, so I will actually use it to generate wallpapers for 4K monitors.

Your desktop is boring. Tired. Lifeless. It badly needs a new outfit, and with that in mind we've put together a massive collection of lovely high-res PC game art to give it a fresh new look. Each ...

There are several wallpaper sizes, 1920×1080 pixels: FHD, 2560×1440 pixels: QHD, 3840×2160 pixels: 4k. 1280×720 pixels: HD and 1600×900 pixels: Semi FHD. However, the preferred size is 1920× ...

Today I stumbled upon Microsoft’s 4K rendering of the Windows XP wallpaper Microsoft Design site has a ton of attractive wallpapers, retro and otherwise.