Examine source code of X Bookmark Manager

{
  "manifest_version": 3,
  "name": "X Bookmark Manager",
  "version": "1.1",
  "description": "Save and categorize tweets locally.",
  "permissions": [
    "activeTab",
    "storage",
    "contextMenus"
  ],
  "action": {
    "default_popup": "popup.html",
    "default_icon": {
      "16": "XBM-16.png",
      "32": "XBM-32.png",
      "48": "XBM-48.png",
      "128": "XBM-128.png"
    }
  },
  "icons": {
    "16": "XBM-16.png",
    "32": "XBM-32.png",
    "48": "XBM-48.png",
    "128": "XBM-128.png"
  },
  "background": {
    "service_worker": "background.js",
    "scripts": [
      "background.js"
    ]
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "xbookmarkmanager@ribmc95.github.io",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  }
}