LinkedIn reports that members obtain 21x more views by adding a professional head shot photo. The preferred LinkedIn profile photo size is 400×400 pixels, although it is okay to use an image as big as 7680 w x 4320 h pixels. Use JPG, GIF or PNG format with a maximum file size of 8MB. The video below illustrates how to take a great profile photo. You can either do it yourself with the camera on your phone or there is likely a photographer on Craig’s List that will come to you for under a $100.