Frameworky Qwik a Astro z pohledu React vývojáře

The work focuses on the development of web applications. Specifically, three frameworks with the aim of providing the fastest possible web pages and applications were selected. This speed can be measured using various metrics during the user's browser loading. The main goal of the work is to introduce and compare these frameworks, with the main part of this comparison being the speed of the selected frameworks. The selected frameworks are Next.js, Astro, and Qwik. Based on the information obtained, a recommendation is created for choosing frameworks for different types of web pages and applications. To obtain the most accurate results, it is necessary to perform measurements on as identical pages as possible. Therefore, the work also includes the design and implementation of a simple testing website. The website is designed with a focus on this measurement. Individual pages are representing possible types of actual pages, making it possible to imagine the use of frameworks for different types of websites. A simple performance measurement script was prepared using the freely available tool Lighthouse, and to minimize anomalies, the measurement was performed for all pages in several iterations. Since the author chose the topic based on his knowledge of the React library, a subjective sense of the difficulty of use, particularly of the Astro and Qwik frameworks, is also included in the comparison. This comparison is part of the second part of the overall comparison. Other parts include the scope of framework functionalities, their communities, and documentation. Based on the measurements, the Qwik framework appears to be the quickest one. It brings a unique way of creating pages and achieves its goals very well. Despite its currently limited functionality and fresh development stage, the framework was recommended only for simpler dynamic websites or applications that require high performance. For simple static pages, the Astro framework was recommended, and for more complex applications, the Next.js framework was recommended. The work should primarily create value for beginner developers who want to gain an overview of current technologies in web development. The work provides a current comparison of framework performance. At the same time, it is necessary to consider the relevance of measurements with the ongoing development not only of frameworks but also of technologies in general.