Examine source code of Export Bookmarks

{
  "manifest_version": 3,
  "permissions": [
    "bookmarks"
  ],
  "action": {
    "default_icon": {
      "16": "/icons/16x16.png",
      "32": "/icons/32x32.png",
      "48": "/icons/48x48.png",
      "128": "/icons/128x128.png"
    }
  },
  "background": {
    "scripts": [
      "serviceworker.js"
    ]
  },
  "content_scripts": [
    {
      "matches": [
        "https://www.bookmarkllama.com/*"
      ],
      "js": [
        "js/contentScript.js"
      ],
      "run_at": "document_start"
    }
  ],
  "icons": {
    "16": "/icons/16x16.png",
    "32": "/icons/32x32.png",
    "48": "/icons/48x48.png",
    "128": "/icons/128x128.png"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "bookmark-exporter@bookmarkllama.com",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  },
  "name": "Export Bookmarks",
  "short_name": "Export",
  "version": "1.0.0",
  "description": "Export browser bookmarks as JSON or browser import HTML.",
  "author": "BookmarkLlama Team",
  "homepage_url": "https://www.bookmarkllama.com/export-bookmarks",
  "host_permissions": [
    "https://www.bookmarkllama.com/*"
  ]
}