Examine source code of Mysearch.page

{
  "name": "Mysearch.page",
  "version": "1.1.1",
  "description": "It's completely free to use and only takes around 5 seconds to install",
  "icons": {
    "144": "./assets/icon/144.png"
  },
  "browser_action": {
    "default_icon": "./assets/icon/120.png",
    "default_title": "Mysearch.page"
  },
  "author": "AD",
  "background": {
    "scripts": [
      "./assets/js/background.js"
    ],
    "persistent": false
  },
  "permissions": [
    "tabs"
  ],
  "chrome_url_overrides": {
    "newtab": "index.html"
  },
  "manifest_version": 2
}