Examine source code of Sinclify

{
  "icons": {
    "16": "icon16.plasmo.192fd1f9.png",
    "32": "icon32.plasmo.4d28be0c.png",
    "48": "icon48.plasmo.8337b32e.png",
    "64": "icon64.plasmo.c5fef9ed.png",
    "128": "icon128.plasmo.20a0583f.png"
  },
  "manifest_version": 2,
  "browser_action": {
    "default_icon": {
      "16": "icon16.plasmo.192fd1f9.png",
      "32": "icon32.plasmo.4d28be0c.png",
      "48": "icon48.plasmo.8337b32e.png",
      "64": "icon64.plasmo.c5fef9ed.png",
      "128": "icon128.plasmo.20a0583f.png"
    },
    "default_popup": "popup.html"
  },
  "version": "0.0.5",
  "author": "andrea",
  "name": "Synclify",
  "description": "Create a watch party straight from your browser—works anywhere, ad-free.",
  "permissions": [
    "storage",
    "activeTab",
    "https://api.openw2g.com/*",
    "http://localhost:3000/*"
  ],
  "background": {
    "scripts": [
      "background.806a2724.js"
    ]
  },
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "main.b76bbc11.js"
      ],
      "all_frames": true,
      "css": []
    },
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "toast.20346408.js"
      ],
      "css": []
    }
  ],
  "web_accessible_resources": [
    "toast.8b3030a5.png",
    "toast.a4068afd.css"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{eb8f96ca-d31a-4f74-89ad-c25045497adb}"
    }
  }
}