Examine source code of GPT Browser Extension

{
  "manifest_version": 3,
  "name": "GPT Browser Extension",
  "description": "Adding a chat box to access ChatGPT from a browser extension",
  "version": "1.2.0",
  "icons": {
    "256": "icons/icon256.png"
  },
  "action": {
    "browser_style": true,
    "default_icon": {
      "256": "icons/icon256.png"
    },
    "default_title": "GPT Extension!",
    "default_popup": "index.html"
  },
  "options_ui": {
    "page": "options.html"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "gpt@aramsey.co.uk"
    }
  },
  "permissions": [
    "storage",
    "clipboardWrite",
    "notifications"
  ]
}