<![CDATA[The system development process requires attention from various aspects, one of which is the design of the User Interface (UI) and User Experience (UX). UI/UX design plays an important role in determining user comfort and engagement. One application that has experienced problems in terms of UI/UX is iPusnas, a digital library application owned by the National Library of Indonesia, which has received low reviews on the Playstore and Appstore platforms. This study aims to redesign the iPusnas application using the Double Diamond (DD) method and analyze user reviews through Web Scraping and Natural Language Processing (NLP). A total of 16,725 reviews from Playstore were analyzed to identify the main usability issues. The results of the analysis formed the basis for the application of the four stages of the DD method, namely discover, define, develop, and deliver, to produce a new interface design that meets user needs. System Usability Scale (SUS) testing on 200 respondents resulted in an average score of 81, categorized as acceptable (B), with a satisfaction level ranging from good to excellent. These results indicate that the application of NLP-based Web Scraping and the DD method proved effective in supporting the application redesign process, improving usability quality, and enhancing the user experience on the iPusnas application]]>
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