Purpose – This study aims to evaluate the effectiveness of HEC digital library resources and services in the public sector universities of Khyber Pakhtunkhwa, Pakistan on the basis of research scholars' satisfaction and its impact on their research progress. Design/methodology/approach – A descriptive survey research method was adopted in order to achieve the objectives of this study. A stratified random sampling technique was used to solicit data from both genders. Research scholars of MS/MPhil and PhD from 14 public sector universities of Khyber Pakhtunkhwa were selected as sampled for this study. A structured questionnaire was developed to collect data and a five-point Likert scale was used to know the purpose and the satisfaction level of respondents with digital library resources. The impact of digital library on research and problems faced by them while using these resources was also measured by using a five-point Likert scale. Findings – The results of this study indicate that near to one-fourth of the respondents used digital library resources two to three times a week for article writing and thesis or dissertation purposes. The study concluded that digital library provides effective resources and services to research scholars and also found a significant impact on their research progress at these universities. However, research scholars were not satisfied with the support of library professionals regarding the use of digital library resources. The study has identified several problems encountered by respondents in the use of digital library resources and services. Practical implications – The findings of this study and their implications will be helpful for HEC authorities, universities libraries administrators, decision and policy makers and LIS professionals both in Pakistan and in other places. They should benefit from considering the experience of research scholars with digital library resources. This experience can help future subscriptions, training and use of these resources to maximize research scholars' success and achievement in their research activities. Originality/value – The study is the first of its kind and an important source for knowing the effectiveness of digital library resources on research scholars' progress at Pakistani universities.