Imagine your site interacting with a user as an application. That is, the user can install it on any gadget, receive notifications and work with it (even without an Internet connection). It allows users to use the latest features supported by modern browsers on a website adapted for mobile devices, creating the illusion of using a mobile application. It may sound like a wonder, but that product became popular and widely-used as soon as it entered app development markets – PWA. Such type of the app is quickly emerging but there is a problem which makes many developers refuse providing PWA services and customers refuse upgrading their sites or stores to PWAs – SEO optimization. Today we are going to convince them in SEO friendliness of PWAs.