Examine source code of QR for this tab — offline QR code generator

{
  "manifest_version": 3,
  "name": "QR for this tab — offline QR code generator",
  "version": "1.0.0",
  "description": "Make a QR code of the page you are on, or of any text, Wi-Fi network or contact. Works offline. Nothing is ever sent anywhere.",
  "author": "Alexandre Bourriaud",
  "homepage_url": "https://outily.net/tools/qr-code-generator",
  "icons": {
    "16": "icons/icon-16.png",
    "48": "icons/icon-48.png",
    "128": "icons/icon-128.png"
  },
  "action": {
    "default_title": "QR code for this tab",
    "default_popup": "popup.html",
    "default_icon": {
      "16": "icons/icon-16.png",
      "48": "icons/icon-48.png",
      "128": "icons/icon-128.png"
    }
  },
  "permissions": [
    "activeTab"
  ],
  "content_security_policy": {
    "extension_pages": "script-src 'self'; object-src 'none'"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "qr-for-this-tab@outily.net",
      "strict_min_version": "109.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  }
}