Flutter for web is a code-compatible implementation of Flutter that is rendered using standards-based web technologies: HTML, CSS and JavaScript. With Flutter for web, you can compile existing Flutter code written in Dart into a client experience that can be embedded in the browser and deployed to any web server. You can use all the features of Flutter, and you don’t need a browser plug-in.
Flutter is Google’s portable UI toolkit for building beautiful, native applications for mobile, web, and desktop from a single codebase.