Examine source code of Didet

{
  "description": "Social Survey and Surveillance Platform for Websites and Online Applications.",
  "manifest_version": 2,
  "name": "Didet",
  "version": "2.1",
  "homepage_url": "https://didet.ir",
  "icons": {
    "128": "icons/logo-default.png"
  },
  "permissions": [
    "tabs"
  ],
  "browser_action": {
    "default_icon": "icons/logo-default.png",
    "default_title": "Didet",
    "default_popup": "popup/popup.html"
  },
  "background": {
    "scripts": [
      "script/background.js"
    ]
  }
}