Stopwatch, Timer and Alarm

manifest.json

{
  "update_url": "https://clients2.google.com/service/update2/crx",
  "version": "0.1",
  "manifest_version": 3,
  "offline_enabled": true,
  "name": "Stopwatch, Timer and Alarm",
  "permissions": [
    "storage",
    "alarms",
    "contextMenus"
  ],
  "homepage_url": "https://worldaddons.com/stopwatch-timer-and-alarm/",
  "description": "For your browser, a simple to use and lightweight timer, alarm, and stopwatch.",
  "commands": {
    "_execute_action": {}
  },
  "background": {
    "service_worker": "background.js"
  },
  "action": {
    "default_title": "Stopwatch, Timer and Alarm",
    "default_popup": "source/popup/popup.html",
    "default_icon": {
      "16": "source/icons/16.png",
      "32": "source/icons/32.png",
      "48": "source/icons/48.png",
      "64": "source/icons/64.png"
    }
  },
  "icons": {
    "16": "source/icons/16.png",
    "32": "source/icons/32.png",
    "48": "source/icons/48.png",
    "64": "source/icons/64.png",
    "128": "source/icons/128.png"
  }
}