Duolingo Vocabulary Manager

manifest.json

{
  "update_url": "https://clients2.google.com/service/update2/crx",
  "name": "Duolingo Vocabulary Manager",
  "version": "0.2.0",
  "manifest_version": 2,
  "description": "This is a vocabulary addon to help study Duolingo words",
  "icons": {
    "16": "icons/icon16.png",
    "48": "icons/icon48.png",
    "128": "icons/icon128.png"
  },
  "browser_action": {
    "default_icon": "icons/icon19.png",
    "default_title": "Duolingo Vocab Manager",
    "default_popup": "src/browser_action/browser_action.html"
  },
  "background": {
    "persistent": true,
    "scripts": [
      "js/background.js"
    ]
  },
  "permissions": [
    "webRequest",
    "storage",
    "idle",
    "alarms",
    "tabs",
    "contextMenus",
    "*://*.duolingo.com/*",
    "http://*/*",
    "https://*/*"
  ],
  "content_security_policy": "script-src 'self' https://ssl.google-analytics.com; object-src 'self'"
}