Examine source code of Synonym Safari

{
  "manifest_version": 2,
  "name": "Synonym Safari",
  "version": "1.0",
  "description": "A fun browser extension that challenges users to identify synonyms of English words, helping language learners enhance their vocabulary through engaging quizzes.",
  "icons": {
    "48": "icon.png"
  },
  "browser_action": {
    "default_popup": "index.html",
    "default_title": "Synonym Safari"
  },
  "permissions": [],
  "browser_specific_settings": {
    "gecko": {
      "id": "{4aea59b0-53a3-4fc2-927e-c74840290c14}"
    }
  }
}