Examine source code of Alii

{
  "manifest_version": 2,
  "name": "Alii",
  "version": "1.1resigned1",
  "description": "Search for the cheapest items on Amazon, AliExpress and Ebay all with one click",
  "icons": {
    "48": "icons/alii-48.png",
    "96": "icons/alii-96.png"
  },
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "permissions": [
    "menus",
    "activeTab"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{433ae398-f046-47b6-8f91-3dcc50402fe1}"
    }
  }
}