The size of the photo required for the DV lottery is between 600x600 pixels and 1200x1200 pixels

. The photo must be in a square aspect ratio, with the height equal to the width

. Additionally, the file size must be less than or equal to 240 kB

. When printed, the photo should be 2 x 2 inches (51 x 51 mm)

. It's important to ensure that the photo meets all the specified requirements to avoid disqualification.