On desktop, you can choose one of the predefined images, choose the Microsoft Bing Daily Image, choose an image you previously added, or Add image to customize your background effect. You can Blur the room you're in currently.Select Choose background on desktop or Blur my background on Web.During a call, select the arrow next to the video button or select the More menu.How do I blur or customize my background during a video call in Skype for Windows, Mac, Linux, and Web? When the focus belongs on you and not your room, you can blur or customize your background during a video call in Skype.