Examine source code of EPUB Creator

{
  "manifest_version": 2,
  "name": "EPUB Publisher",
  "version": "1.3",
  "description": "Convert any web page (or multi-chapter series) to a clean EPUB file for reading on eink readers.",
  "homepage_url": "https://github.com/your-username/epub-ff",
  "browser_specific_settings": {
    "gecko": {
      "id": "epub-publisher@local",
      "strict_min_version": "113.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    },
    "gecko_android": {
      "strict_min_version": "113.0"
    }
  },
  "icons": {
    "48": "icons/icon-48.png",
    "96": "icons/icon-96.png",
    "128": "icons/icon-128.png"
  },
  "browser_action": {
    "default_popup": "popup.html",
    "default_icon": "icons/icon-48.png",
    "default_title": "Convert to EPUB"
  },
  "permissions": [
    "activeTab",
    "storage",
    "<all_urls>"
  ],
  "optional_permissions": [
    "downloads"
  ]
}