React Chrome Extension Boilerplate

Boilerplate for Chrome Extension React.js project.


  • Simple React/Redux examples of Chrome Extension Window & Popup & Inject pages
  • Hot reloading React/Redux (Using Webpack and React Transform)
  • Write code with ES2015+ syntax (Using Babel)
  • E2E tests of Window & Popup & Inject pages (Using Chrome Driver, Selenium Webdriver)


The todos state will be saved to



The context menu is created by chrome/extension/background/contextMenus.js.

Inject page

The inject script is being run by chrome/extension/background/inject.js. A simple example will be inject bottom of page(*) if you visit.

If you are receiving the error message Failed to load resource: net::ERR_INSECURE_RESPONSE, you need to allow invalid certificates for resources loaded from localhost. You can do this by visiting the following URL: chrome://flags/#allow-insecure-localhost and enabling Allow invalid certificates for resources loaded from localhost.


# clone it
$ git clone

# Install dependencies
$ npm install


  • Run script
# build files to './dev'
# start webpack development server
$ npm run dev
  • If you're developing Inject page, please allow https://localhost:3000 connections. (Because injectpage injected GitHub (https) pages, so webpack server procotol must be https.)
  • Load unpacked extensions with ./dev folder.

React/Redux hot reload

This boilerplate uses Webpack and react-transform, and use Redux. You can hot reload by editing related files of Popup & Window & Inject page.

Using Redux DevTools Extension

You can use redux-devtools-extension on development mode.


# build files to './build'
$ npm run build


# compress build folder to {}.zip and crx
$ npm run build
$ npm run compress -- [options]


If you want to build crx file (auto update), please provide options, and add update.xml file url in [manifest.json]( manifest.json).

  • --app-id: your extension id (can be get it when you first release extension)
  • --key: your private key path (default: './key.pem')
    you can use npm run compress-keygen to generate private key ./key.pem
  • --codebase: your crx file url

See autoupdate guide for more information.


# lint
$ npm run lint
# test/app
$ npm test
$ npm test -- --watch  # watch files
# test/e2e
$ npm run build
$ npm run test-e2e