Our wallpapers are all high resolution so you really can’t go wrong. That is, a high-res image will compress down but there’s no such thing as compressing-up. It’s the opposite of the old adage about salt: you can always add more, but you can’t take it away once you’ve added too much (ahem, every American restaurant).
No, the sun will pop up tomorrow just like it did today and your computer will keep chugging along, only with new and sexy wallpapers.
Not a bit! You want to avoid “live” wallpapers, like dancing pandas or whatever, but our images are static and will coexist peacefully with your beloved machine.
Nope. If you put a 4K wallpaper on your non-4K monitor, your computer will magically downsample the image to make it look right.