‘On-site interpretation’ is a critical success factor in conveying the significance and multiple heritage values of a cultural heritage site to the visitors. The initial assessment done on the current status of the on-site interpretation at six Cultural World Heritage Sites (CWHS) in Sri Lanka under this study, unveiled the need for a ‘Value-based interpretation strategy’ and integration of ‘appropriate’ digital interpretation techniques with the existing techniques. Accordingly, the objective of this study was to explore the potential digital interpretation techniques and their applicability, aiming at enhancing the level of on-site interpretation of Sri Lankan CWHS. The data gathered through thirteen in-depth interviews with respective professionals, on-site observations, a literature survey, and a survey questionnaire of 505 respondents, were analyzed against 24 criteria, categorized under six themes (Site condition, Legal and Regulatory concerns, Technical and Financial feasibility, Content preparation, Implementation, and Sustainability), which were developed as the theoretical framework for the present study by referring the literature. It was determined that ‘Augmented Reality (AR) enabled Mobile apps’, a combination of Mobile apps and Mobile-AR technology, are feasible and appropriate for all six CWHS. This study recommends a dedicated app for each CWHS, enriched with Mobile-AR modules (virtual tour guide, virtual markers for visitor navigation, virtual reconstructions, AR filters), Comparisons to world context, Customizable itineraries, Side-tabs of heritage values, User engagement features, etc., to provide a tailor-made and innovative visitor experience in complying with the value-based interpretation strategy. In addition, the study presents a set of recommendations for the proposed apps under the themes of ‘Content creation’, ‘Organizational adaptability’, ‘Policy changes’, ‘Partnerships and Promotion’, and ‘Post-Implementation Evaluation and Extended Uses’ for a successful future implementation. The composite outcome of the present study could be followed as a reference model in enhancing the level of on-site interpretation at the CWHS of the country but not limited to.