Question and Answer
Promptly and conscientiously
AnswerThank you for your question.
This is to inform that the Vietnam standard photo size is 4*6cm with the white background; however, it is not very strict. The size can be little smaller or bigger. Your light green background photo is also acceptable.
If you do not have time to prepare the photo before your departure, you can also get them taken at a Vietnam airport with the fee around $2 at Noi Bai airport and at Ho Chi Minh airport is 5 USD. Do not worry about this.