Examine source code of Web Exporter

{
  "manifest_version": 2,
  "name": "Web Exporter",
  "version": "1.7.0",
  "version_name": "1.7.0",
  "description": "Export selected page elements to PDF, Markdown, or PNG.",
  "browser_specific_settings": {
    "gecko": {
      "id": "web_exporter@youtonghy.com",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  },
  "icons": {
    "16": "icons/icon16.png",
    "32": "icons/icon32.png",
    "48": "icons/icon48.png",
    "128": "icons/icon128.png"
  },
  "browser_action": {
    "default_popup": "popup.html",
    "default_title": "Export element",
    "default_icon": {
      "16": "icons/icon16.png",
      "32": "icons/icon32.png",
      "48": "icons/icon48.png",
      "128": "icons/icon128.png"
    }
  },
  "permissions": [
    "activeTab",
    "tabs",
    "<all_urls>"
  ],
  "web_accessible_resources": [
    "lib/html2canvas.min.js",
    "lib/pdf-lib.min.js"
  ],
  "background": {
    "scripts": [
      "background.js"
    ],
    "persistent": false
  },
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "src/i18n/index.js",
        "content.js"
      ],
      "run_at": "document_idle"
    }
  ]
}