A:Answer Hi, MelS! We appreciate this inquiry. As of now, the Insignia™ - 50" Class F30 Series LED 4K UHD Smart Fire TV's USB mode only supports JPEG format images (with ".jpg" file extensions), and not all JPEG files are compatible with the TV. You may check more product information by visiting the link below. Dalainne | Insignia Support. https://www.bestbuy.com/site/insignia-50-class-f30-series-led-4k-uhd-smart-fire-tv/6525240.p?skuId=6525240