How many inches does the photo of the birth permit need?

The photo of the birth permit should be 1 inch.

One-inch photos are generally used as identification photos. In order to ensure the quality of photos and the unity of portrait size, angle, posture and color, the Ministry of Public Security has formulated and issued the Technical Standard for Digital Photos for ID Card Making.

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.

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

Black and white size increased by one inch: 3.3cm x 4.8cm

One inch smaller in color and blue background: 2.7cm x 3.8cm

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

One inch smaller red background color: 2.7cm x 3.8cm

One inch larger in color, red background: 4.0cm x 5.5cm

Reference source: Baidu Encyclopedia-One-inch photo