Build your first Chrome extension - Workshop

This is a past event

15 people went


We're happy to collaborate with Women Who Code Tokyo for this workshop!
Men are welcome to attend this event too 馃檪

Whether it is to pick a color from a web page, manage your passwords or remove all political posts from Facebook, Chrome extensions make your browsing experience smoother and add useful features to your favorite browser.
In this workshop, we'll cover all the basics of how to create your own extension using two simple examples: a font-picking extension and a reading list manager.


鈥 Set up your Chrome Extension in Chrome dev tool
鈥 Recap about the DOM and how to interact with it using JavaScript
鈥 First extension: Creating script to interact with your page
鈥 Recap on how APIs work
鈥 Second extension: Creating script to send data to an API
鈥 Bonus: add your extension to Chrome store!


鈥 Bring your laptop!
鈥 This is a workshop for half-beginners, basic notions of HTML/CSS, JS, JSON, and the DOM will be useful
鈥 Install Chrome ( and any text editor (Sublime Text, Atom, VSC)
鈥 Create a GitHub account (


About Women Who Code

WWCode Tokyo strives to be an inclusive and safe space. We are a multilingual group, and all women in tech (or interested in tech) are encouraged to join! Beginners welcome.

About Le Wagon Tokyo

Le Wagon Tokyo ( is a coding school for startups, creative people and tech entrepreneurs. Our 9-week Full-Stack Coding Bootcamp ( is designed for complete beginners or "half-beginners" who really want to dive into programming and, above all, change their mindset. Learn to think like a developer, consider issues with new insight, and become more autonomous thanks to these newly acquired abilities.

The next Tokyo batch will start on January 13th and applications are open. ( Still considering whether to apply or not? Try our free online track! (

Our part-time bootcamp is now open! Next batch kicks off March 21st, 2020.