Examine source code of Online Markdown Viewer with HTML Preview

{
  "manifest_version": 3,
  "name": "__MSG_appName__",
  "version": "2.3.1",
  "default_locale": "en",
  "description": "__MSG_shortDesc__",
  "browser_specific_settings": {
    "gecko": {
      "id": "markdown-viewer@leadingtech.ca",
      "strict_min_version": "115.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  },
  "permissions": [
    "activeTab",
    "scripting",
    "downloads",
    "storage",
    "menus",
    "clipboardWrite"
  ],
  "commands": {
    "_execute_action": {
      "suggested_key": {
        "default": "Alt+M",
        "mac": "Alt+M"
      },
      "description": "Convert page or selection to Markdown"
    }
  },
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "sidebar_action": {
    "default_title": "Online Markdown Viewer with HTML Preview",
    "default_panel": "ui/sidebar.html",
    "default_icon": {
      "16": "icons/icon16.png",
      "32": "icons/icon32.png",
      "48": "icons/icon48.png"
    }
  },
  "action": {
    "default_title": "View as Markdown",
    "default_icon": {
      "16": "icons/icon16.png",
      "32": "icons/icon32.png",
      "48": "icons/icon48.png",
      "128": "icons/icon128.png"
    }
  },
  "icons": {
    "16": "icons/icon16.png",
    "32": "icons/icon32.png",
    "48": "icons/icon48.png",
    "128": "icons/icon128.png"
  }
}