Optimization for Front-End Application Performance: Proven Techniques for Enhancing Speed, Responsiveness, and Efficiency in Modern Web Applications

Abstract

In the study front-end applications (client-side applications) are examined for their critical role in delivering interactive and responsive user experiences. The rapid evolution of front-end development, driven by technologies like HTML, CSS, JavaScript, and frameworks such as React, Angular, and Vue.js, has introduced significant performance optimization challenges. This research aims to identify key optimization techniques—ranging from code minification and tree shaking to lazy loading, caching, and progressive web app (PWA) implementation—and assess their impact on user experience through metrics like First Contentful Paint (FCP), Time to Interactive (TTI), Total Blocking Time (TBT), and Cumulative Layout Shift (CLS). By conducting a comprehensive literature review and practical experiments on real-world applications, the study seeks to provide actionable insights and recommendations for developers to enhance front-end performance. Despite focusing primarily on front-end techniques and relying on performance testing tools and user surveys, the findings underscore the importance of optimization for improving user satisfaction, search engine rankings, accessibility, and server resource management.