Your visa application requires the right type of photo to accompany it. You could receive a denial if you do not meet the photo requirements.
Knowing what your photo must look like is essential to submit a proper application. The U.S. Department of State explains you should first check as to whether you need a photo or digital image for your type of visa.
Your visa photo must be in color and mainly consist of your head. The government wants your head to take up at least 50% of the image. You also need a current photo, which means it should be from within the last six months.
You will want a neutral background of white. You need your full face in the picture and should have a neutral facial expression, which means you should not smile. You cannot have your eyes closed or have anything on your head or face, such as glasses or a hat. You can wear religious clothing.
When you submit your application, you must provide two copies of your photo. They must be 2 inches by 2 inches in size and on good quality photo paper. Digital photos should have a square aspect ratio and be no more than 240 kb.
You will usually only need to get a photo occasionally unless you have some major change to your appearance. The photo remains valid as long as it is easy to tell that you are the person in the image. There are many places that will assist with taking a proper photo, but you can do it yourself. Keep in mind, though, it must meet all requirements.