OPCraft

manifest.json

{
  "update_url": "https://clients2.google.com/service/update2/crx",
  "manifest_version": 2,
  "name": "OPCraft",
  "short_name": "OPC",
  "description": "Server Status",
  "version": "3.0",
  "permissions": [
    "<all_urls>",
    "background",
    "storage",
    "notifications"
  ],
  "icons": {
    "16": "images/icon16.png",
    "48": "images/icon48.png",
    "128": "images/icon128.png"
  },
  "background": {
    "scripts": [
      "jquery-3.3.1.min.js",
      "background.js"
    ],
    "persistent": true
  },
  "browser_action": {
    "default_icon": "images/icon.png"
  }
}