Abstract Introduction: A beautiful smile is a facial expression of grave importance as it relates to communication and expression of one’s own feelings and emotion. Planned orthodontic evaluation of smile using Digital Smile Design Software is helpful in determining the final treatment goal of obtaining every criterion of the American Board of Orthodontics along with an esthetic smile. Aim: To digitally evaluate smile based on hard tissue component in Class-I, Class-II division 1 and Class-II division 2 malocclusion. Method- For each patient, a series of photographs required for DSD analysis will be performed. The facial aspects, smile harmony and dental characteristics will be evaluated. The hard tissue component of beautiful smile in Class-I, Class-II division-1 and Class II Division-2 cases is evaluated, compared and corrected accordingly. Results- Chi square test, student unpaired t-test, students t test & ANOVA test will be utilised to analyse data. Comparison of the hard tissue component of beautiful smile in Class-I, Class-II division-1 and Class II Division-2 cases will be done usng t-test. When all parameters will be assessed norms for each cases will be obtained. Conclusion- Digital evaluation of smile before beginning of any procedure can help to achieve treatment goals.