Examine source code of Insta Super Features

{
  "manifest_version": 3,
  "name": "Insta Super Features",
  "version": "4",
  "description": "Auto-scrolling and comment opening for Reels, plus a progress bar for Instagram,Download reels, auto unmute in reels",
  "icons": {
    "16": "imgs/icon16.png",
    "32": "imgs/icon32.png",
    "48": "imgs/icon48.png",
    "128": "imgs/icon128.png"
  },
  "permissions": [
    "storage",
    "activeTab",
    "tabs"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "insta-auto-scroller-v2@archimetrix",
      "strict_min_version": "140.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ],
        "optional": []
      }
    }
  },
  "background": {
    "service_worker": "background.js",
    "scripts": [
      "background.js"
    ]
  },
  "content_scripts": [
    {
      "matches": [
        "https://www.instagram.com/*"
      ],
      "js": [
        "content.js"
      ],
      "css": [
        "ig-progressbar.css"
      ],
      "run_at": "document_end"
    },
    {
      "matches": [
        "https://fastdl.app/*",
        "https://sssinstagram.com/*"
      ],
      "js": [
        "content.js"
      ],
      "run_at": "document_end"
    },
    {
      "matches": [
        "https://www.instagram.com/*"
      ],
      "js": [
        "anon-bootstrap.js"
      ],
      "run_at": "document_start"
    }
  ],
  "action": {
    "default_icon": "imgs/icon128.png",
    "default_popup": "popup.html"
  },
  "host_permissions": [
    "https://www.instagram.com/*",
    "https://fastdl.app/*",
    "https://sssinstagram.com/*"
  ],
  "web_accessible_resources": [
    {
      "resources": [
        "inject.js"
      ],
      "matches": [
        "https://www.instagram.com/*"
      ]
    }
  ]
}