Tiivistelmä
Current web platform and browsers are adequately powerful to support mobile and desktop applications. Application Program Interfaces (APIs) that support the integration of mobile device and web browsers can execute features such as notifications, push messages, home screen icon, device camera and so on. The concept of progressive web apps is to make regular websites functional as mobile and desktop app, without compromising the user experience of traditionally used native apps. In order to understand the concept of Progressive Web Apps (PWAs), a functional app was created using HTML, CSS, JavaScript, along with the manifest file, service workers, and web APIs.
The primary objective of the thesis was to understand and implement the technologies of Progressive Web Applications (PWAs). Hence, a detailed study of the topic and development of a PWA was also carried out. The study showed that one PWA could serve the function of a website, mobile app and a desktop app efficiently. On one hand, the technology used for making a PWA is not too complicated for web developers using HTML, CSS, and JavaScript, and on the other hand, simple files can turn an existing HTTPS website into a fully functional app, saving the cost of developing a new native app.