Examine source code of Censor Tracker

{
  "background" : {
    "scripts" : [
      "background.js" 
    ],
    "persistent" : true 
  },
  "browser_action" : {
    "default_popup" : "popup.html",
    "default_icon" : "images/icons/128x128/default.png"
  },
  "browser_specific_settings": {
    "gecko": {
      "strict_min_version": "91.1.0",
      "id": "{5d0d1f87-5991-42d3-98c3-54878ead1ed1}"
    }
  },
  "content_security_policy" : "script-src 'self'; object-src 'self';",
  "manifest_version" : 2 ,
  "permissions" : [
    "<all_urls>" ,
    "webRequest" ,
    "alarms" ,
    "activeTab" ,
    "management" ,
    "notifications" ,
    "proxy" ,
    "storage" ,
    "tabs" ,
    "unlimitedStorage" 
  ],
  "version" : "18.5.0",
  "name" : "__MSG_appName__" ,
  "description" : "__MSG_appDesc__" ,
  "author": "__MSG_appAuthor__" ,
  "default_locale" : "en" ,
  "homepage_url" : "https://censortracker.org/",
  "icons" : {
    "16" : "images/icons/16x16/default.png",
    "48" : "images/icons/48x48/default.png",
    "128" : "images/icons/128x128/default.png"
  },
  "options_ui" : {
    "page": "options.html" ,
    "open_in_tab": true
  }
}