Examine source code of Flashcards

{
  "manifest_version": 2,
  "name": "Flashcards",
  "version": "1.1.1",
  "description": "A flashcard extension to help you learn and memorize new words and much more as you browse.",
  "icons": {
    "48": "icon.png"
  },
  "chrome_url_overrides": {
    "newtab": "./index.html"
  },
  "permissions": [],
  "browser_specific_settings": {
    "gecko": {
      "id": "{f8715231-6e78-4084-9936-9c802a42c53b}"
    }
  }
}