According to multiple sources, the recommended size for a Facebook cover photo in 2023 is 820 pixels wide by 312 pixels tall on desktop and 640 pixels wide by 360 pixels tall on mobile devices. Its important to note that Facebook will automatically crop the photo to fit the dimensions of its platform, so its recommended to keep all text and graphics within the middle safe zone. The minimum size requirement for a Facebook cover photo is 400 pixels wide and 150 pixels tall. The image should be less than 100 kilobytes and uploaded as an sRGB JPG file.