['Dietary assessment of adolescents with intellectual and developmental disabilities (IDD) is challenging due to the limited cognitive abilities of this population.', 'The purpose of this study was to determine the feasibility of using of digital images to improve the estimates of energy and macronutrient intake from proxy-assisted 3-day food records in adolescents with IDD.', 'Participants used a mobile device to take photos of all food and beverages consumed over a three-day period and simultaneously completed a standard parent-assisted 3-day food record at two separate time points. A registered dietitian reviewed and recorded the differences between the standard record and the images. The proxy-assisted records and the photo-assisted records were analyzed separately.', 'One hundred and thirty eating occasions were entered (20 participants (age = 14.9 ± 2.2 yrs, 45.0% female)). Photo-assisted records captured significantly higher estimates of energy intake per eating occasion than regular proxy-assisted records (P = 0.001) as well as significantly greater grams of fat (P = 0.011), carbohydrates (P = 0.003), and protein (P = 0.004).'] Does digital photography improve estimates of dietary intake in adolescents with intellectual and developmental disabilities?