Stop Youtube Autoplay

manifest.json

{
  "update_url": "https://clients2.google.com/service/update2/crx",
  "manifest_version": 2,
  "name": "Stop Youtube Autoplay",
  "short_name": "No Autoplay",
  "description": "This extension allows you to disable autoplay by default on Youtube",
  "version": "1.3",
  "browser_action": {
    "default_icon": "icon128.png",
    "default_popup": "popup.html"
  },
  "permissions": [
    "activeTab",
    "storage",
    "tabs",
    "https://www.youtube.com/*",
    "http://www.youtube.com/*"
  ],
  "icons": {
    "16": "icon16.png",
    "48": "icon48.png",
    "128": "icon128.png"
  },
  "background": {
    "matches": [
      "https://www.youtube.com/watch*",
      "http://www.youtube.com/watch*"
    ],
    "scripts": [
      "background.js"
    ],
    "persistent": false
  }
}