Examine source code of Pictag

{
  "name": "__MSG_appName__",
  "version": "0.0.6resigned1",
  "manifest_version": 2,
  "description": "__MSG_appDescription__",
  "icons": {
    "16": "icons/icon-16.png",
    "128": "icons/icon-128.png"
  },
  "default_locale": "en",
  "background": {
    "scripts": [
      "scripts/background.js"
    ]
  },
  "options_ui": {
    "page": "options.html"
  },
  "content_scripts": [
    {
      "matches": [
        "http://*/*",
        "https://*/*"
      ],
      "css": [
        "styles/iframe.css"
      ],
      "run_at": "document_end",
      "all_frames": true
    }
  ],
  "web_accessible_resources": [
    "result.html"
  ],
  "permissions": [
    "contextMenus",
    "activeTab",
    "tabs",
    "storage",
    "webRequest",
    "<all_urls>"
  ],
  "applications": {
    "gecko": {
      "id": "pictag@art-ifact.de"
    }
  }
}