One-inch photo is a common photo size, and its size is usually 2.5cm× 3.5cm ... The name of this size comes from the traditional printing photo size standard, in which one inch is equal to 2.54 cm.

In modern digital photography, the pixel of an inch photo is usually 295px × 4 13px, and the resolution is 300dpi. This photo size is suitable for various scenes, such as ID card, passport, driver's license, visa, social security card and other documents, as well as various professional qualification certificates and resume photos.

When taking a one-inch photo, you need to keep your facial expression natural, open your eyes and look at the camera lens, naturally close your mouth and expose your ears. At the same time, the background should be simple and clear, and the light should be even and soft to avoid shadows and reflections. In a word, one-inch photo is a very practical photo size, which can meet various documents and professional needs.