Examine source code of Force Reader View

{
  "description" : "__MSG_extensionDescription__" ,
  "manifest_version" : 2 ,
  "name" : "__MSG_extensionName__" ,
  "short_name" : "__MSG_extensionShortName__" ,
  "version" : "0.1.1",
  "developer": {
    "name" : "Salvora"
  },
  "default_locale" : "en" ,
  "browser_specific_settings": {
    "gecko": {
      "id": "@forcereaderview",
      "strict_min_version": "130.0"
    }
  },
  "icons" : {
    "16" : "icons/reader-mode-16.png",
    "32" : "icons/reader-mode-32.png",
    "48" : "icons/reader-mode-48.png",
    "96" : "icons/reader-mode-96.png"
  },
  "permissions" : [
    "tabs" ,
    "activeTab" 
  ],
  "background" : {
    "scripts" : [
      "forcereaderview.js" 
    ]
  },
  "browser_action" : {
    "default_icon" : "icons/reader-mode-32.png",
    "default_title" : "__MSG_browserActionTitle__" 
  },
  "commands" : {
    "activate-reader-view": {
      "suggested_key": {
        "default": "Ctrl+Alt+Y"
      },
      "description" : "Force Reader View"
    }
  }
}