Examine source code of Reels Remover

{
  "manifest_version": 2,
  "name": "Reels Remover",
  "version": "1.0",
  "description": "Removes Reels from Instagram.",
  "icons": {
    "48": "icon.png"
  },
  "browser_action": {
    "default_popup": "popup.html",
    "default_icon": "icon.png"
  },
  "permissions": [
    "activeTab",
    "https://www.instagram.com/*"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{ca9e50f1-2c2a-4245-92b7-1de5a9b1580a}"
    }
  }
}