Examine source code of Website Links Checker

{
  "name": "Website Links Checker",
  "description": "This tool helps you check all links from a page you are currently viewing.",
  "author": "Keral Patel",
  "homepage_url": "https://www.keralpatel.com",
  "version": "1.0",
  "manifest_version": 3,
  "permissions": [
    "activeTab",
    "scripting"
  ],
  "action": {
    "default_popup": "popup.html",
    "default_icon": "images/linkschecker128.png"
  },
  "icons": {
    "16": "images/linkschecker16.png",
    "32": "images/linkschecker32.png",
    "48": "images/linkschecker48.png",
    "128": "images/linkschecker128.png"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "keral@keralpatel.com",
      "strict_max_version": "110.0"
    }
  }
}