Examine source code of Cleanchat-export

{
  "manifest_version": 2,
  "name": "Cleanchat-export",
  "version": "1.1.4",
  "description": "Exporter une conversation ChatGPT en Markdown, en HTML élégant ou en HTML imprimable pour PDF, avec noms de fichiers fondés sur la conversation et la maquette.",
  "icons": {
    "16": "icons/icon-16.png",
    "24": "icons/icon-24.png",
    "48": "icons/icon-48.png",
    "96": "icons/icon-96.png",
    "128": "icons/icon-128.png",
    "256": "icons/icon-256.png"
  },
  "permissions": [
    "activeTab",
    "tabs",
    "storage"
  ],
  "browser_action": {
    "default_title": "Exporter la conversation ChatGPT",
    "default_popup": "popup.html",
    "default_icon": {
      "16": "icons/icon-16.png",
      "24": "icons/icon-24.png",
      "48": "icons/icon-48.png"
    }
  },
  "content_scripts": [
    {
      "matches": [
        "https://chatgpt.com/*",
        "https://chat.openai.com/*"
      ],
      "js": [
        "turndown.js",
        "content.js"
      ],
      "run_at": "document_idle"
    }
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "@cleanchat-export",
      "strict_min_version": "142.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  }
}