Examine source code of VietEng Word Explorer

{
  "manifest_version": 2,
  "name": "VietEng Word Explorer",
  "version": "1.0",
  "description": "A fun and interactive quiz game to enhance your Vietnamese-to-English vocabulary skills through engaging word translation challenges, ideal for language learners.",
  "icons": {
    "48": "word_explorer_icon.png"
  },
  "browser_action": {
    "default_popup": "index.html",
    "default_title": "VietEng Word Explorer"
  },
  "permissions": [],
  "browser_specific_settings": {
    "gecko": {
      "id": "{47ee0c2c-1cab-4b94-bd76-644ee74f6ea2}"
    }
  }
}