Examine source code of InstaGrabber Pro

{
  "manifest_version": 3,
  "name": "InstaGrabber",
  "version": "2.1",
  "description": "Download Instagram posts and reels. Basic mode for quick grabs, Advanced mode with sync, stories, filters, ZIP export and more.",
  "icons": {
    "48": "icons/icon48.png",
    "96": "icons/icon96.png"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "deeprandom258@gmail.com",
      "strict_min_version": "109.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  },
  "permissions": [
    "downloads",
    "storage",
    "cookies",
    "notifications",
    "activeTab",
    "scripting"
  ],
  "host_permissions": [
    "*://*.instagram.com/*",
    "*://*.cdninstagram.com/*",
    "*://*.fbcdn.net/*"
  ],
  "background": {
    "scripts": [
      "zip.js",
      "background.js"
    ]
  },
  "action": {
    "default_popup": "popup.html",
    "default_title": "InstaGrabber",
    "default_icon": {
      "48": "icons/icon48.png",
      "96": "icons/icon96.png"
    }
  },
  "content_scripts": [
    {
      "matches": [
        "*://*.instagram.com/*"
      ],
      "js": [
        "content.js"
      ],
      "css": [
        "content.css"
      ]
    }
  ]
}