One-inch photos are generally used as identification photos. The size of the photo is in inches, 1 inch =2.54cm, and usually x inches refers to the inch length of the long side of the photo.

All photos must be recent bareheaded color headshots, with heads accounting for 2/3 of the photo size, white background without borders, clear images, rich layers, natural expressions and no obvious distortion, and the photo size is 25mm×35mm.

Size unit of the photo:

The size of photos is usually in inches, 1 inch ≈2.54 cm. An x-inch photo means that the long side of the photo is x-inch. For example, the length of a 5-inch photo is 2.54x5 =12.7cm; The length of 12 inch photo is 2.54x12 = 30.5cm. ..

ID card, physical examination form, etc. Most of them are one inch small, 22×32mm, the photo size of the second-generation ID card is 26mm×32mm, the ordinary one-inch photo is 25 mm× 35 mm, and the photo size of China passport/travel card is 48mm×33mm, in which the head width is 15mm ~ 22mm and the head length is 28 mm ~ 33 mm.