Examine source code of App Opener

{
  "manifest_version": 3,
  "name": "App Opener",
  "version": "1.3.1",
  "description": "App Opener creates “open in app” links for YouTube and 22+ platforms.",
  "browser_specific_settings": {
    "gecko": {
      "id": "appopener@recut.in",
      "strict_min_version": "109.0"
    }
  },
  "permissions": [
    "tabs",
    "activeTab",
    "contextMenus",
    "clipboardWrite",
    "notifications"
  ],
  "host_permissions": [
    "https://appopener.recut.in/*",
    "https://airbnb.com/*",
    "https://www.airbnb.com/*",
    "https://abnb.me/*",
    "https://www.abnb.me/*",
    "https://aliexpress.com/*",
    "https://www.aliexpress.com/*",
    "https://a.aliexpress.com/*",
    "https://www.a.aliexpress.com/*",
    "https://amazon.com/*",
    "https://www.amazon.com/*",
    "https://amazon.in/*",
    "https://www.amazon.in/*",
    "https://amazon.co.uk/*",
    "https://www.amazon.co.uk/*",
    "https://amazon.de/*",
    "https://www.amazon.de/*",
    "https://amazon.fr/*",
    "https://www.amazon.fr/*",
    "https://amazon.it/*",
    "https://www.amazon.it/*",
    "https://amazon.es/*",
    "https://www.amazon.es/*",
    "https://amazon.ca/*",
    "https://www.amazon.ca/*",
    "https://amazon.co.jp/*",
    "https://www.amazon.co.jp/*",
    "https://amazon.com.au/*",
    "https://www.amazon.com.au/*",
    "https://amazon.com.mx/*",
    "https://www.amazon.com.mx/*",
    "https://amazon.com.br/*",
    "https://www.amazon.com.br/*",
    "https://amazon.ae/*",
    "https://www.amazon.ae/*",
    "https://amzn.to/*",
    "https://www.amzn.to/*",
    "https://amzn.in/*",
    "https://www.amzn.in/*",
    "https://amzn.eu/*",
    "https://www.amzn.eu/*",
    "https://a.co/*",
    "https://www.a.co/*",
    "https://music.apple.com/*",
    "https://www.music.apple.com/*",
    "https://itun.es/*",
    "https://www.itun.es/*",
    "https://facebook.com/*",
    "https://www.facebook.com/*",
    "https://fb.me/*",
    "https://www.fb.me/*",
    "https://fb.watch/*",
    "https://www.fb.watch/*",
    "https://grubhub.com/*",
    "https://www.grubhub.com/*",
    "https://grubhub.app.link/*",
    "https://www.grubhub.app.link/*",
    "https://instagram.com/*",
    "https://www.instagram.com/*",
    "https://instagr.am/*",
    "https://www.instagr.am/*",
    "https://linkedin.com/*",
    "https://www.linkedin.com/*",
    "https://lnkd.in/*",
    "https://www.lnkd.in/*",
    "https://messenger.com/*",
    "https://www.messenger.com/*",
    "https://m.me/*",
    "https://www.m.me/*",
    "https://netflix.com/*",
    "https://www.netflix.com/*",
    "https://nflx.it/*",
    "https://www.nflx.it/*",
    "https://netflix.app.link/*",
    "https://www.netflix.app.link/*",
    "https://pinterest.com/*",
    "https://www.pinterest.com/*",
    "https://pin.it/*",
    "https://www.pin.it/*",
    "https://pinterest.app.link/*",
    "https://www.pinterest.app.link/*",
    "https://snapchat.com/*",
    "https://www.snapchat.com/*",
    "https://open.spotify.com/*",
    "https://www.open.spotify.com/*",
    "https://spoti.fi/*",
    "https://www.spoti.fi/*",
    "https://spotify.link/*",
    "https://www.spotify.link/*",
    "https://t.me/*",
    "https://www.t.me/*",
    "https://telegram.me/*",
    "https://www.telegram.me/*",
    "https://tiktok.com/*",
    "https://www.tiktok.com/*",
    "https://vm.tiktok.com/*",
    "https://www.vm.tiktok.com/*",
    "https://vt.tiktok.com/*",
    "https://www.vt.tiktok.com/*",
    "https://twitch.tv/*",
    "https://www.twitch.tv/*",
    "https://x.com/*",
    "https://www.x.com/*",
    "https://twitter.com/*",
    "https://www.twitter.com/*",
    "https://t.co/*",
    "https://www.t.co/*",
    "https://walmart.com/*",
    "https://www.walmart.com/*",
    "https://wa.me/*",
    "https://www.wa.me/*",
    "https://whatsapp.com/*",
    "https://www.whatsapp.com/*",
    "https://api.whatsapp.com/*",
    "https://www.api.whatsapp.com/*",
    "https://wolt.com/*",
    "https://www.wolt.com/*",
    "https://wolt.link/*",
    "https://www.wolt.link/*",
    "https://yelp.com/*",
    "https://www.yelp.com/*",
    "https://yelp.to/*",
    "https://www.yelp.to/*",
    "https://youtube.com/*",
    "https://www.youtube.com/*",
    "https://zoom.us/*",
    "https://www.zoom.us/*"
  ],
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "content_scripts": [
    {
      "matches": [
        "https://airbnb.com/*",
        "https://www.airbnb.com/*",
        "https://abnb.me/*",
        "https://www.abnb.me/*",
        "https://aliexpress.com/*",
        "https://www.aliexpress.com/*",
        "https://a.aliexpress.com/*",
        "https://www.a.aliexpress.com/*",
        "https://amazon.com/*",
        "https://www.amazon.com/*",
        "https://amazon.in/*",
        "https://www.amazon.in/*",
        "https://amazon.co.uk/*",
        "https://www.amazon.co.uk/*",
        "https://amazon.de/*",
        "https://www.amazon.de/*",
        "https://amazon.fr/*",
        "https://www.amazon.fr/*",
        "https://amazon.it/*",
        "https://www.amazon.it/*",
        "https://amazon.es/*",
        "https://www.amazon.es/*",
        "https://amazon.ca/*",
        "https://www.amazon.ca/*",
        "https://amazon.co.jp/*",
        "https://www.amazon.co.jp/*",
        "https://amazon.com.au/*",
        "https://www.amazon.com.au/*",
        "https://amazon.com.mx/*",
        "https://www.amazon.com.mx/*",
        "https://amazon.com.br/*",
        "https://www.amazon.com.br/*",
        "https://amazon.ae/*",
        "https://www.amazon.ae/*",
        "https://amzn.to/*",
        "https://www.amzn.to/*",
        "https://amzn.in/*",
        "https://www.amzn.in/*",
        "https://amzn.eu/*",
        "https://www.amzn.eu/*",
        "https://a.co/*",
        "https://www.a.co/*",
        "https://music.apple.com/*",
        "https://www.music.apple.com/*",
        "https://itun.es/*",
        "https://www.itun.es/*",
        "https://facebook.com/*",
        "https://www.facebook.com/*",
        "https://fb.me/*",
        "https://www.fb.me/*",
        "https://fb.watch/*",
        "https://www.fb.watch/*",
        "https://grubhub.com/*",
        "https://www.grubhub.com/*",
        "https://grubhub.app.link/*",
        "https://www.grubhub.app.link/*",
        "https://instagram.com/*",
        "https://www.instagram.com/*",
        "https://instagr.am/*",
        "https://www.instagr.am/*",
        "https://linkedin.com/*",
        "https://www.linkedin.com/*",
        "https://lnkd.in/*",
        "https://www.lnkd.in/*",
        "https://messenger.com/*",
        "https://www.messenger.com/*",
        "https://m.me/*",
        "https://www.m.me/*",
        "https://netflix.com/*",
        "https://www.netflix.com/*",
        "https://nflx.it/*",
        "https://www.nflx.it/*",
        "https://netflix.app.link/*",
        "https://www.netflix.app.link/*",
        "https://pinterest.com/*",
        "https://www.pinterest.com/*",
        "https://pin.it/*",
        "https://www.pin.it/*",
        "https://pinterest.app.link/*",
        "https://www.pinterest.app.link/*",
        "https://snapchat.com/*",
        "https://www.snapchat.com/*",
        "https://open.spotify.com/*",
        "https://www.open.spotify.com/*",
        "https://spoti.fi/*",
        "https://www.spoti.fi/*",
        "https://spotify.link/*",
        "https://www.spotify.link/*",
        "https://t.me/*",
        "https://www.t.me/*",
        "https://telegram.me/*",
        "https://www.telegram.me/*",
        "https://tiktok.com/*",
        "https://www.tiktok.com/*",
        "https://vm.tiktok.com/*",
        "https://www.vm.tiktok.com/*",
        "https://vt.tiktok.com/*",
        "https://www.vt.tiktok.com/*",
        "https://twitch.tv/*",
        "https://www.twitch.tv/*",
        "https://x.com/*",
        "https://www.x.com/*",
        "https://twitter.com/*",
        "https://www.twitter.com/*",
        "https://t.co/*",
        "https://www.t.co/*",
        "https://walmart.com/*",
        "https://www.walmart.com/*",
        "https://wa.me/*",
        "https://www.wa.me/*",
        "https://whatsapp.com/*",
        "https://www.whatsapp.com/*",
        "https://api.whatsapp.com/*",
        "https://www.api.whatsapp.com/*",
        "https://wolt.com/*",
        "https://www.wolt.com/*",
        "https://wolt.link/*",
        "https://www.wolt.link/*",
        "https://yelp.com/*",
        "https://www.yelp.com/*",
        "https://yelp.to/*",
        "https://www.yelp.to/*",
        "https://youtube.com/*",
        "https://www.youtube.com/*",
        "https://zoom.us/*",
        "https://www.zoom.us/*"
      ],
      "js": [
        "content.js"
      ],
      "run_at": "document_start"
    },
    {
      "matches": [
        "https://youtube.com/*",
        "https://m.youtube.com/*",
        "https://www.youtube.com/*"
      ],
      "js": [
        "yt_inject.js"
      ],
      "css": [
        "yt_inject.css"
      ],
      "run_at": "document_idle"
    }
  ],
  "commands": {
    "open-popup": {
      "suggested_key": {
        "default": "Alt+S",
        "mac": "Alt+S"
      },
      "description": "App Opener"
    }
  },
  "action": {
    "default_popup": "popup.html",
    "default_title": "App Opener",
    "default_icon": {
      "16": "icons/icon16.png",
      "48": "icons/icon48.png",
      "128": "icons/icon128.png"
    }
  },
  "icons": {
    "16": "icons/icon16.png",
    "48": "icons/icon48.png",
    "128": "icons/icon128.png"
  },
  "content_security_policy": {
    "extension_pages": "script-src 'self'; object-src 'self'; img-src 'self' https: data: blob:; style-src 'self' 'unsafe-inline'; font-src 'self' data:"
  }
}