Examine source code of WebWidgetizer

{
  "manifest_version" : 3 ,
  "name" : "WebWidgetizer",
  "version" : "2.0.2",
  "description" : "Opens specific links in a dedicated popup tab.",
  "author": "M.Šehić",
  "browser_specific_settings": {
    "gecko": {
      "id": "{2f00030f-9869-45d5-b8ce-11b5c01ded5c}",
      "strict_min_version": "109.0"
    }
  },
  "permissions" : [
    "tabs" ,
    "activeTab" ,
    "storage" ,
    "contextMenus" 
  ],
  "action" : {
    "default_popup" : "html/popup.html",
    "default_icon" : {
      "16" : "images/icon16.png",
      "48" : "images/icon48.png",
      "128" : "images/icon128.png"
    }
  },
  "commands" : {
    "open_link_in_new_window": {
      "suggested_key": {
        "default": "Ctrl+Shift+Y"
      },
      "description" : "Open link in new window"
    }
  },
  "options_ui" : {
    "page": "html/options.html" ,
    "open_in_tab": true
  },
  "icons" : {
    "16" : "images/icon16.png",
    "48" : "images/icon48.png",
    "128" : "images/icon128.png"
  },
  "background" : {
    "scripts" : [
      "js/background.js" 
    ]
  },
  "content_scripts" : [
    {
      "matches" : [
        "https://*/*" ,
        "http://*/*" 
      ],
      "js" : [
        "js/content.js" 
      ]
    }
  ]
}