Examine source code of Chrisvicmall

{
  "manifest_version": 2,
  "name": "Chrisvicmall",
  "version": "1.1",
  "description": "With this extension, you do not need to copy and paste link from 1688.com to chrisvicmall.com before you can add to cart. All you need to do is open any product on 1688.com and then click on this extension to view it on chrisvicmall.com",
  "content_scripts": [
    {
      "matches": [
        "*://*.1688.com/offer/*.html*"
      ],
      "js": [
        "./js/foreground.js"
      ],
      "css": [
        "./css/bootstrap.min.css"
      ]
    }
  ],
  "background": {
    "page": "popup.html"
  },
  "icons": {
    "16": "/images/icon16.png",
    "32": "/images/icon32.png",
    "48": "/images/icon48.png",
    "128": "/images/icon128.png"
  },
  "permissions": [
    "storage",
    "activeTab",
    "tabs"
  ],
  "browser_action": {
    "default_popup": "popup.html",
    "browser_style": true,
    "default_icon": {
      "16": "/images/icon16.png",
      "32": "/images/icon32.png",
      "48": "/images/icon48.png",
      "128": "/images/icon128.png"
    }
  }
}