Examine source code of Continuous Webpage to PDF

{
  "manifest_version": 3,
  "name": "Continuous Webpage to PDF",
  "version": "1.0",
  "description": "Exports current webpage as a single-page, continuous PDF file with live text and links.",
  "permissions": [
    "activeTab",
    "scripting",
    "notifications"
  ],
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "action": {
    "default_title": "Export Continuous Vector PDF",
    "default_area": "navbar",
    "default_icon": {
      "16": "icon-16.png",
      "32": "icon-32.png"
    }
  },
  "icons": {
    "48": "icon-48.png"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "extension_continuous-webpage-to-pdf@webdev.firefox",
      "strict_min_version": "140.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    },
    "gecko_android": {
      "strict_min_version": "142.0"
    }
  }
}