The rise of mobile web usage has led to an increase in responsive design being a necessity for attracting more publicity and traffic towards websites. Mobile website testing is crucial to ensure quality assurance, bounce back rates are elevated due to the need for a positive UX experience through their mobile website. Google's mobile-friendly ranking algorithm and mobile-first indexing have given preferences to mobile-optimized websites, and page loading speed has become a key factor in search rankings. LambdaTest provides an effective way of testing responsiveness of any website through various screen sizes, and offers free options such as emulators and simulators for device testing labs or cross browser compatibility testing. The focus is on improving server side components to cope with the multiplication of assets included to facilitate a better UI and UX.