Examine source code of Auto Refresh

{
  "manifest_version": 3,
  "name": "Auto Refresh",
  "version": "1.0.1",
  "description": "Refresh any tab on a timer. No ads, no upsells, no account.",
  "permissions": [
    "alarms",
    "storage",
    "activeTab",
    "tabs",
    "scripting"
  ],
  "background": {
    "service_worker": "background.js",
    "scripts": [
      "background.js"
    ]
  },
  "action": {
    "default_title": "Auto Refresh",
    "default_popup": "popup/popup.html",
    "default_icon": {
      "16": "icons/icon-16.png",
      "32": "icons/icon-32.png",
      "48": "icons/icon-48.png",
      "128": "icons/icon-128.png"
    }
  },
  "icons": {
    "16": "icons/icon-16.png",
    "32": "icons/icon-32.png",
    "48": "icons/icon-48.png",
    "128": "icons/icon-128.png"
  },
  "commands": {
    "toggle-refresh": {
      "suggested_key": {
        "default": "Alt+Shift+R"
      },
      "description": "Start or stop auto refresh on the active tab"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "auto-refresh@extendforge.com",
      "strict_min_version": "126.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  }
}