This project was bootstrapped with Create React App for Chrome Extension.

Screenshot, when you click on the extension in Chrome

Folder Structure

After creation, your project should look like this:

my-app/
  README.md
  node_modules/
  package.json
  public/
    index.html
    favicon.ico
    logo.svg
    manifest.json
  src/
    App.css
    App.js
    App.test.js
    index.css
    index.js
    logo.svg

For the project to build, these files must exist with exact filenames:

• public/index.html is the page template;
• src/index.js is the JavaScript entry point.

Available Scripts

In the project directory, you can run:

npm start

Runs the app in the development mode.
Open http://localhost:3000 to view it in the browser.

The page will reload if you make edits.
You will also see any lint errors in the console.

npm test

Launches the test runner in the interactive watch mode.
See the section about running tests for more information.

npm run build

Builds the app for production to the build folder.
It correctly bundles React in production mode and optimizes the build for the best performance.

The build is minified and the filenames include the hashes.
Your app is ready to be deployed!

Chrome Manifest v2

{
  "manifest_version": 2,

  "name": "My Extension",
  "description": "This extension is a starting point to create a real Chrome extension",
  "version": "0.0.1",

  "browser_action": {
    "default_popup": "index.html",
    "default_title": "Open the popup"
  },
  "icons": {
    "16": "logo.svg",
    "48": "logo.svg",
    "128": "logo.svg"
  },
  "permissions": [
  ]
}