Examine source code of Auto refresher | Great

{
  "manifest_version": 2,
  "name": "Auto Refresher",
  "version": "1.0",
  "description": "Automatically refreshes the page at specified intervals within a time range.",
  "permissions": [
    "activeTab",
    "storage",
    "scripting",
    "tabs",
    "http://*/*",
    "https://*/*"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "auto-refresher@yourdomain.com",
      "strict_min_version": "60.0"
    }
  },
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "browser_action": {
    "default_popup": "popup.html",
    "default_icon": {
      "128": "icons/icon.png"
    }
  },
  "content_scripts": [
    {
      "matches": [
        "http://*/*",
        "https://*/*"
      ],
      "js": [
        "content.js"
      ]
    }
  ]
}