Examine source code of VocabVoyager

{
  "manifest_version": 2,
  "name": "VocabVoyager",
  "version": "1.0",
  "description": "A fun and interactive vocabulary trainer that helps you master Vietnamese-to-English word translations.",
  "icons": {
    "48": "vocab_icon.png"
  },
  "browser_action": {
    "default_popup": "index.html",
    "default_title": "VocabVoyager"
  },
  "permissions": [],
  "browser_specific_settings": {
    "gecko": {
      "id": "{b8204f43-589f-48c2-bd87-f60f3980bb43}",
      "data_collection_permissions": {
        "required": [
          "none"
        ],
        "optional": []
      }
    }
  }
}