Examine source code of Bookmark Board

{
  "manifest_version": 2,
  "name": "Bookmark Board",
  "version": "1.1.2",
  "description": "A beautiful, glassmorphic visual dashboard for your bookmarks toolbar.",
  "author": "Ciro Di Salvo",
  "icons": {
    "16": "icon16.png",
    "48": "icon48.png",
    "128": "icon128.png"
  },
  "permissions": [
    "bookmarks",
    "storage"
  ],
  "chrome_url_overrides": {
    "newtab": "dashboard.html"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "bookmark-board@cirodisalvo.it",
      "strict_min_version": "58.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  }
}