With Microsoft’s theme packs, you choose the background. With Bing Wallpaper, Microsoft’s team curates a new photograph to serve as your PC’s wallpaper.

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× ...