During the last decades, a growing trend has been to put more and more functionality into the client by using the latest and greatest JavaScript framework. But what if we could be using native code in the browser in order to run computations faster and potentially reuse code from the backend in the frontend? Enter WebAssembly. WebAssembly is a new web standard that enables you to run native code as part of your current JavaScript framework. This talk will give you a thorough understanding of what web assembly is and how you can use it in your project. We will cover a practical example of writing WebAssembly using Rust. We will go through everything from writing your WebAssembly code to publish it as an npm package and finally use it in an existing web application.