Study Language by Shiftcard

manifest.json

{
  "update_url": "https://clients2.google.com/service/update2/crx",
  "short_name": "shiftcard(쉬프트 카드)",
  "description": "Add, Get, Repeat, Save, Enjoy Youtube Subtitles. This is best program shadowing language.",
  "version": "1.20",
  "name": "Study Language by Shiftcard",
  "manifest_version": 2,
  "author": "Athi",
  "permissions": [
    "webNavigation",
    "tabs",
    "https://www.youtube.com/watch/*",
    "https://www.youtube.com/*",
    "https://*.youtube.com/*"
  ],
  "browser_action": {
    "default_icon": "shiftcard.png",
    "default_popup": "popup.html"
  },
  "icons": {
    "16": "icon16.png",
    "32": "icon32.png",
    "128": "icon128.png",
    "512": "icon512.png"
  },
  "externally_connectable": {
    "matches": [
      "https://www.youtube.com/*"
    ]
  },
  "content_security_policy": "script-src 'self' 'unsafe-eval' https://www.google-analytics.com https://ssl.google-analytics.com https://www.youtube.com/iframe_api https://s.ytimg.com https://s.ytimg.com/yts/jsbin/www-widgetapi-vflUFVyEP/www-widgetapi.js; object-src 'self'"
}