National Digital Libraries are online collections that provide access to a wide range of digital resources, including books, articles, images, and multimedia. These libraries aim to preserve cultural heritage and make information accessible to the public, often free of charge. They serve as valuable tools for education, research, and lifelong learning. Many countries have established their own National Digital Libraries, such as the Library of Congress in the United States and the British Library in the United Kingdom. These platforms often collaborate with educational institutions and other organizations to expand their collections and enhance user experience.