The main thread, on the web, has a lot of responsibilities. At the same time, web apps are getting more sophisticated every day. Therefore, the main thread gets too busy that will disappoint our user by showing janky frames! The off-main-thread architecture ensures apps run smoothly on every device for everyone.

In this talk, we will go through the possibilities in browsers such as WebWorker, Worklet, and WebAssembly by introducing practical tools that allow us to boost our user experiences.

Talk Agenda:
1- Introducing the problem, event loop and how the problem occurs
2- Example of Web worker, an old friend and underestimated feature
3- Introducing a new Solution to work with WebWorkers
4- WebAssembly, a new friend and powerful, it made easy to write it with AssemblyScript.
5- Worklets, a baby that is growing in the browsers, accessing low-level rendering pipeline and it's very performant.
5- And finally PWA and Service Worker, in fact, this doesn't help directly in browsers but will help to handle processes like offline browsing, push notification and etc. I built an application that works offline and accepts web push notification.