Examine source code of All Emoji Board

{
  "manifest_version": 2,
  "name": "Emoji Board",
  "version": "2.4.3",
  "description": "A quick emoji board in your toolbar. Type to search by keyword, switch between categories, and tap an emoji to copy it. Your most recent picks stay one click away.",
  "icons": {
    "32": "assets/icon-32.png",
    "48": "assets/icon-48.png",
    "64": "assets/icon-64.png",
    "96": "assets/icon-96.png",
    "128": "assets/icon-128.png"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{d6f04a2b-4995-44e6-aca3-0ea0c92fab1d}",
      "strict_min_version": "101.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  },
  "permissions": [
    "storage",
    "clipboardWrite"
  ],
  "browser_action": {
    "default_title": "Emoji Board",
    "default_popup": "app/popup.html",
    "default_icon": {
      "32": "assets/icon-32.png",
      "48": "assets/icon-48.png",
      "64": "assets/icon-64.png"
    }
  }
}