The National Digital Library is an all digital library that stores information about different types of digital contents including books, articles, videos, audios, thesis and other educational materials relevant for users from varying educational levels and capabilities. It provides a single window search facility to access digital contents currently existing in India as well as other digital sources under a single umbrella. At present more than 80 lakh digital resources are available at no cost. https://ndl.iitkgp.ac.in