Examine source code of Image extract

{
  "description": "Pulls images out of the current tab",
  "manifest_version": 3,
  "homepage_url": "https://github.com/Skeletonxf/image-extract",
  "name": "Image extract",
  "version": "2.3",
  "permissions": [
    "menus",
    "activeTab",
    "storage",
    "scripting"
  ],
  "background": {
    "page": "/background-page.html"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{6381b0dc-8bef-47d0-8c31-6fffbdd8ec7f}",
      "strict_min_version": "129.0"
    }
  },
  "action": {
    "default_icon": "icons/arrow.svg",
    "default_title": "Image extract"
  },
  "options_ui": {
    "page": "/settings/settings.html"
  },
  "commands": {
    "extract-shortcut-1": {
      "suggested_key": {
        "default": "Ctrl+E"
      },
      "description": "Run image extract on current tab from keyboard shortcut (1)"
    },
    "extract-shortcut-2": {
      "suggested_key": {
        "default": "Alt+Shift+E"
      },
      "description": "Run image extract on current tab from keyboard shortcut (2)"
    },
    "extract-shortcut-3": {
      "suggested_key": {
        "default": "Alt+Shift+I"
      },
      "description": "Run image extract on current tab from keyboard shortcut (3)"
    }
  }
}