Examine source code of Hanja Flashcard Creator

{
  "manifest_version": 2,
  "name": "Hanja Flashcard Creator",
  "description": "Allows users to generate Hanja flashcards directly from hanja.dict.naver.com, making it easier to study and memorize Chinese characters used in Korean",
  "version": "0.0.1",
  "icons": {
    "96": "icons/icon.png"
  },
  "background": {
    "scripts": [
      "background_script.js"
    ]
  },
  "permissions": [
    "tabs",
    "*://hanja.dict.naver.com/*",
    "webRequest",
    "*://localhost/"
  ],
  "browser_action": {
    "default_icon": {
      "96": "icons/icon.png"
    },
    "default_title": "Export to Anki."
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{a21bfc73-7be3-4f6a-8455-7e64adef71f8}"
    }
  }
}