Optimizing User Experience: Evaluation of Usability and Cognitive Walkthrough on Web DECART

The DECART website is a publication forum for the results of collaborative discussions between the Institut Teknologi Del and several international partners. This website requires good usability design to ensure information is delivered according to user needs. Therefore, it is necessary to redesign the website using a user-centred design approach and evaluation that focuses on website usability using NAU and CW so that the usability aspect can be improved. Research evaluation was carried out by inspection by three experts in the UI/UX field, and an online questionnaire with 5 Nielsen categories was distributed to 20 representative respondents to measure the website's usability score. Based on the evaluation, it was found that there was an increase in the usability score after improvements were made based on expert inspection. Decart website usability after being redesigned and evaluated based on 5 Nielsen categories, including Good to Very Good usability levels.