Examine source code of VocabSpark

{
  "manifest_version": 3,
  "name": "VocabSpark",
  "version": "1.0",
  "description": "Master English vocabulary with fun, fast-paced quizzes. Improve your word power daily with VocabSpark - the perfect companion for language learners.",
  "icons": {
    "48": "vocabspark_icon.png"
  },
  "action": {
    "default_popup": "index.html",
    "default_title": "VocabSpark"
  },
  "permissions": [],
  "browser_specific_settings": {
    "gecko": {
      "id": "{895861c4-a9a0-49f5-8858-46a552f51184}",
      "data_collection_permissions": {
        "required": [
          "none"
        ],
        "optional": []
      }
    }
  }
}