Add-ons provide a safe, simple, and powerful way to personalize your browsing experience. Now, it’s easier than ever to create add-ons for Firefox with WebExtensions APIs. This Web-based technology framework offers a powerful way to create browser extensions that can be easily ported to Chrome, Opera, and Edge, and you only need to know HTML, JavaScript and CSS to build them.
In this activity you will learn about what makes browser extensions great and how to build a simple add-on using WebExtensions APIs. This activity will also prepare you for your next meeting in which you will start diving more into Building your First browser add-on.