Banks are a service industry, so there are certain requirements for the external image of employees, at least to give people a clean and comfortable feeling. Before taking pictures, candidates should tidy themselves up, don't look lacking in spirit, and don't dress up too much. You can show it to others to see if it gives people a comfortable feeling. The photos must be clear. Shoot with a high-pixel camera, not a mobile phone.
The format must be JPEG, GIF or JPG, and the size must be within 80K or 100K. If the photo format and size do not meet the requirements, you can use some retouching software to adjust it until it meets the requirements.