Photos are photos used to prove identity on various documents. The ID photo requires a bareheaded (bareheaded) front photo. In the photo, you should normally see the outline of people's ears and the place equivalent to Adam's apple. The background color is mostly red, blue and white, and the size is mostly one inch or two inches.
background color
White background: used for passport, visa, driver's license, ID card, second-generation ID card, driver's license, black and white certificate, medical insurance card, Hong Kong and Macao pass, etc.
Blue background: used for graduation certificate, work permit, resume, etc.
Red background: used for insurance, medical insurance, IC cards, temporary residence permits and wedding photos.
Reference to the above content: Baidu Encyclopedia-ID photo