Examine source code of YouTube Gallery

{
  "manifest_version": 2,
  "name": "YouTube Gallery",
  "version": "1.1resigned1",
  "author": "jsdeveloper",
  "description": "View and save Youtube Images",
  "icons": {
    "200": "icon.png"
  },
  "content_scripts": [
    {
      "matches": [
        "*://*.youtube.com/*"
      ],
      "js": [
        "utid-popup.js"
      ],
      "css": [
        "utid-style.css"
      ]
    }
  ],
  "permissions": [
    "activeTab"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{ce30468f-fcf4-4e29-ba4e-4312ebf205d0}"
    }
  }
}