If you are making an US Visa application through the DS-16 online application, you will need to scan and upload your photo. It should be noted that you need to submit one printed photograph meeting requirements, along with the online DS-160 confirmation page.
Download US Visa Photo Guide
You can download the Photography Guide in PDF format from here – Size:790KB (From: US Department of State website – travel.state.gov). It must be noted that each panel of the guide will print on a separate page. The Guide presents the latest recommendations for passport and visa photographs. Read the guide thoroughly to become familiar with the information provided. The guide is designed to help photographers ensure that Customers (US Visa applicants) are accurately represented and Photos are free of common defects that cause delays.
Read US Passport Photo and Visa Photo Guidelines online
You can also read the guidelines online at the following web locations.
Read the guides and ensure that you produce good quality photos for U.S. passports and U.S. visas. This helps the US Department of State to process the applications efficiently.