However, the number of pixels depends on the purpose. If it is developed, the resolution is generally 300dpi, which is 295*4 12. If it is viewed online, the resolution is generally 72dpi, which is 7 1*99.

Extended data:

Other special photos:

First-generation ID photo: (black and white photo): 2.2cm x 3.2cm

Second-generation ID photo: 2.6cm x 3.2cm

One inch smaller in black and white: 2.2cm x 3.2cm

One inch larger in black and white: 3.3cm x 4.8cm

Color small one inch blue background: 2.7cm x 3.8cm

Small one-inch colored white background: 2.7cm x 3.8cm

Small one-inch red background in color: 2.7cm x 3.8cm

Color big one inch red background: 4.0cm x 5.5cm

(1 inch/2 inch)150-200kb640x480 (300,000) 2.5×3.5cm/3.5x5.3cm?

Baidu encyclopedia-one-inch photo