Examine source code of IWolf SEO Checker

{
  "manifest_version": 3,
  "name": "IWolf SEO Checker",
  "version": "1.0.2",
  "description": "Analyze on-page SEO for any URL you enter: title, meta description, H1 tags, image ALT texts & word count.",
  "icons": {
    "16": "icon16.png",
    "48": "icon48.png",
    "128": "icon128.png",
    "512": "icon512.png"
  },
  "host_permissions": [
    "https://api.allorigins.win/*"
  ],
  "action": {
    "default_popup": "popup.html",
    "default_icon": {
      "16": "icon16.png",
      "48": "icon48.png",
      "128": "icon128.png"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "seo-checker@iwolf.nl",
      "strict_min_version": "109.0"
    }
  }
}