Lightweight Alarm Clock, Timer & Countdown

manifest.json

{
  "update_url": "https://clients2.google.com/service/update2/crx",
  "manifest_version": 2,
  "name": "Lightweight Alarm Clock, Timer & Countdown",
  "description": "Alarm clock, timer, and countdown with sound and desktop notification.",
  "version": "3.0.2",
  "background": {
    "scripts": [
      "background.js"
    ],
    "persistent": false
  },
  "options_page": "options.html",
  "browser_action": {
    "default_icon": "alarm-clock-8-19.png",
    "default_title": "Alarm Clock & Timer",
    "default_popup": "popup.html"
  },
  "icons": {
    "16": "alarm-clock-8-16.png",
    "48": "alarm-clock-8-48.png",
    "128": "alarm-clock-8-128.png"
  },
  "web_accessible_resources": [
    "alarm-clock-8-48.png"
  ],
  "permissions": [
    "alarms",
    "notifications"
  ]
}