Examine source code of Beautify for ChatGPT

{
  "manifest_version": 3,
  "name": "Beautify for ChatGPT",
  "version": "1.1",
  "description": "Custom background tweaks for ChatGPT: blur + dim with sliders.",
  "browser_specific_settings": {
    "gecko": {
      "id": "beautifyforchatgpt@oatsy.dev",
      "strict_min_version": "140.0",
      "data_collection_permissions": {
        "optional": [],
        "required": [
          "none"
        ]
      }
    }
  },
  "icons": {
    "16": "icons/icon16.png",
    "32": "icons/icon32.png",
    "48": "icons/icon48.png",
    "128": "icons/icon128.png",
    "256": "icons/icon256.png"
  },
  "permissions": [
    "storage",
    "tabs"
  ],
  "host_permissions": [
    "https://chatgpt.com/*",
    "https://*.openai.com/*"
  ],
  "action": {
    "default_popup": "popup.html",
    "default_title": "Beautify for ChatGPT",
    "default_icon": {
      "16": "icons/icon16.png",
      "32": "icons/icon32.png",
      "48": "icons/icon48.png"
    }
  },
  "content_scripts": [
    {
      "matches": [
        "https://chatgpt.com/*",
        "https://*.openai.com/*"
      ],
      "js": [
        "content-script.js"
      ],
      "run_at": "document_idle"
    }
  ],
  "web_accessible_resources": [
    {
      "resources": [
        "Assets/bg-forest.jpg",
        "Assets/bg-beach.jpg",
        "Assets/bg-desert.jpg",
        "Assets/bg-aurora.jpg",
        "Assets/bg-space.jpg"
      ],
      "matches": [
        "<all_urls>"
      ]
    }
  ]
}