4K / 5K : 5120 x 2880, suits for Apple 5K retina display and 4K high resolution display.
HD : 1920 x 1080, suits for full HD display and for PS3 and PS4.
iPad / iPhone : 3132 x 3132, suits for Apple iPad series and iPad pro with parallax effect. These images are for only private use. If you want to use for business, purchase license.