One-inch photos refer to one-inch photos, which are generally used as ID photos. In order to ensure the uniformity of photo quality and portrait size, angle, posture, color, etc., the Ministry of Public Security has formulated and published the technical standard of digital photos for ID card making (GA46 1-2004).
All photos must be recent bareheaded color headshots, with the head accounting for 2/3 of the photo size, white background without borders, clear images, rich layers, natural expression and no obvious distortion, and the photo size is 25mm×35mm.
Extended data
Other photo size specifications:
1, 2 inches: 3.5mm*5.3mm
2, large 1 inch: 3.3mm*4.8mm
3, 5 inches/3r:12.7mm * 8.9mm.
4. 6 inch/4r:15.2mm *10.2mm.
5. 7 inches/5r:17.8mm *12.7mm.
6, 8 inches: 15.2mm*20.3mm
7. Small 12 inch: 20.3mm*30.5mm
8. 12 inch: 25.4mm*30.5mm
Baidu encyclopedia-photo size