Examine source code of AppLinks

{
  "manifest_version": 2,
  "name": "AppLinks",
  "version": "1.0.2",
  "description": "Catches application links and lets you inspect them",
  "permissions": [
    "activeTab",
    "webNavigation",
    "tabs",
    "storage",
    "<all_urls>"
  ],
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "browser_action": {
    "default_popup": "index.html",
    "default_icon": "icons/default-icon.png"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{257c440a-d535-4620-a634-d7f345df8ac4}"
    }
  }
}