Build your first Chrome extension

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Impact Hub Tokyo

〒153-0063 東京都TokyoMeguro, 2 Chome−11, 目黒区目黒 2-11-3 印刷工場1階 · Tokyo

How to find us

From JR / Tokyo Metro Meguro Station, it is 8 mins walking distance after walking down Meguro Dori Street.

Location image of event venue


Welcome to another exciting event collaboration with Le Wagon Tokyo!

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.


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


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

Happy Coding!

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.

Men are welcome to attend this event too 🙂

📌 WWCode call for speakers, leaders, and volunteers

Pssst! Would you like to get more involved with the Women Who Code community and help us make a difference for women in tech? We're always looking for new leaders and volunteers to help us organize the events, spread the word or mentor in our study sessions! Email us at [masked].
If you want to be a speaker in one of our future events, fill out our speakers form and we will be more than happy to get in touch with you. First time speakers are super welcome and encouraged!
Speakers form:

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