# Progressive Web Apps PWA or Progressive Web App is a term for a regular website that has a couple special features * Able to be 'installed' on your desktop or phone (Android, not really Apple) like a regular app (yes, you can uninstall too). This way you don't need to load Chrome to run the app * Have a service worker, which runs separately from the website/app and can handle notifications sent by the server (known as 'push' notifications, such as you get with regular apps when Facebook wants to sell you something) and also allow the app to work offline --- # Agent Instructions: Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter: ``` GET https://johnkazer.gitbook.io/core-web-dev-concepts/progressive-web-apps.md?ask= ``` The question should be specific, self-contained, and written in natural language. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.