Examine source code of Scribd Embed Opener

{
  "manifest_version": 2,
  "name": "Scribd Embed Opener",
  "version": "1.0",
  "description": "فتح روابط Scribd المضمنة",
  "permissions": [
    "activeTab"
  ],
  "browser_action": {
    "default_popup": "popup.html",
    "default_icon": {
      "16": "icon.png",
      "48": "icon.png",
      "128": "icon.png"
    }
  },
  "content_scripts": [
    {
      "matches": [
        "*://www.scribd.com/*"
      ],
      "js": [
        "content.js"
      ]
    }
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{873ef8eb-13a5-4353-b34e-7b65044f2eea}"
    }
  }
}