Examine source code of Recruiter XL

{
  "name": "Recruiter XL",
  "version": "3.1",
  "manifest_version": 2,
  "description": "Extraheer profiel(en) naar je  Recruiter XL applicatie.",
  "icons": {
    "16": "images/icon16.png",
    "32": "images/icon32.png",
    "48": "images/icon48.png",
    "64": "images/icon64.png",
    "128": "images/icon128.png"
  },
  "browser_action": {
    "default_icon": "images/icon.png",
    "default_popup": "popup.html"
  },
  "permissions": [
    "tabs",
    "storage",
    "activeTab",
    "cookies",
    "<all_urls>"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{7801b141-5226-427a-8113-63d5dc00d47a}"
    }
  }
}