Examine source code of QR Code Image Scanner

{
  "manifest_version": 2,
  "name": "QR Code Image Scanner",
  "version": "1.0",
  "description": "Scan all images on the current webpage for QR codes.",
  "permissions": [
    "activeTab",
    "<all_urls>"
  ],
  "browser_action": {
    "default_title": "QR Code Image Scanner",
    "default_popup": "popup.html"
  },
  "icons": {
    "48": "icons/icon48.png",
    "96": "icons/icon96.png"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "qr-image-scanner@qrscanner.org",
      "data_collection_permissions": {
        "required": [
          "none"
        ],
        "collects_personal_data": false,
        "collects_sensitive_data": false,
        "collects_web_activity": false
      }
    }
  }
}