Examine source code of Wiktionary Popup

{
  "name": "Wiktionary Popup",
  "description": "Allows access to Wiktionary by selecting words. ",
  "version": "1.2",
  "manifest_version": 2,
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "content_scripts": [
    {
      "matches": [
        "*://*/*"
      ],
      "js": [
        "content.js"
      ],
      "css": [
        "main.css",
        "frame.css"
      ]
    }
  ],
  "browser_action": {
    "browser_style": true,
    "default_icon": {
      "16": "icons/icon16.png",
      "24": "icons/icon24.png",
      "32": "icons/icon32.png",
      "64": "icons/icon64.png"
    },
    "default_title": "Configure Wiktionary popup",
    "default_popup": "config.html"
  },
  "permissions": [
    "activeTab",
    "storage",
    "https://*/"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "wiktionarypopup2@id.id"
    }
  },
  "web_accessible_resources": [
    "load.gif"
  ]
}