Examine source code of Webpage to PDF

{
  "manifest_version": 3,
  "name": "Webpage to PDF",
  "short_name": "Webpage to PDF",
  "version": "1.0.0",
  "description": "Save any webpage as a PDF in one click — keeps layout, images, text and links. Private, fast, works offline.",
  "permissions": [
    "activeTab",
    "storage",
    "contextMenus",
    "notifications"
  ],
  "background": {
    "scripts": [
      "shared/pdf-settings.js",
      "background/background.js"
    ]
  },
  "action": {
    "default_popup": "popup/popup.html",
    "default_title": "Save page as PDF",
    "default_icon": {
      "16": "icons/icon-16.png",
      "32": "icons/icon-32.png",
      "48": "icons/icon-48.png",
      "96": "icons/icon-96.png",
      "128": "icons/icon-128.png"
    }
  },
  "icons": {
    "16": "icons/icon-16.png",
    "32": "icons/icon-32.png",
    "48": "icons/icon-48.png",
    "96": "icons/icon-96.png",
    "128": "icons/icon-128.png"
  },
  "commands": {
    "_execute_action": {
      "suggested_key": {
        "default": "Alt+Shift+P"
      },
      "description": "Open the Webpage to PDF popup"
    },
    "quick-save": {
      "suggested_key": {
        "default": "Alt+Shift+S"
      },
      "description": "Save page as PDF with current settings"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "webpage-to-pdf@srpvpn.github.io",
      "strict_min_version": "140.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    },
    "gecko_android": {
      "strict_min_version": "142.0"
    }
  }
}