Abstract

This study presents a heuristic evaluation and analysis methodology to enhance online platform usability. Recognizing usability's critical role, especially in the information-rich online environment, the methodology employs expert evaluators using predefined heuristics for interface usability and information structure assessments. Twelve evaluators identified 71 usability issues on a pa-tent-related matching service platform. Using Nielsen's heuristics and affinity di-agrams, these issues were categorized into 13 groups. A quantitative evaluation framework was developed with Quality Function Deployment (QFD) matrix, linking customer requirements to usability improvements.

The card sorting methodology restructured the website's menu and navigation system, resulting in a proposed sitemap redesign with a "Case Studies" menu and reorganized "Users" and "Experts" categories. The framework effectively identi-fies and prioritizes usability issues, providing a practical tool for small-scale en-terprises. Future research should compare usability with competitors and develop decision-support systems to enhance user-centered design and website develop-ment.