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Solve connection issues

The plugin uploads the converted design to the live preview, which is a web application run by Qt.

If the plugin cannot connect to the live preview, check that:

  • Your computer is connected to the internet and the connection is stable.
  • The connection between the plugin and the live preview is not blocked by the operating system, browser, a firewall, or a VPN.
  • Your VPN client or browser extension settings do not block real-time communication with WebRTC, which they might do to prevent WebRTC leak that exposes IP addresses.

The plugin shows alerts about connection issues that suggest actions for solving the issues.

  • Apple Safari
  • Google Chrome
  • Microsoft Edge
  • Mozilla Firefox

To improve the live preview experience:

  • Check that JavaScript is enabled in the browser.
  • Close unnecessary browser tabs.
  • Disable ad blockers for the live preview domain.
  • Try the incognito or private browsing mode to eliminate extension conflicts.

Common connection issues

IssueTry this
Endless loading
  • Check the internet connection.
  • Disable the VPN.
  • Set another browser as the default browser or copy the live preview URL to another browser.
Blank screen
  • Clear the browser cache.
  • Check that JavaScript is enabled.
Connection timeout
  • Restart the plugin and try again.
  • Check firewall settings.

Cannot connect to Figma

If the connection to Figma is blocked by the operating system, browser, a firewall, or a VPN, the message Cannot connect to Figma appears in the live preview.

The following sections describe how you can try to fix the issues on some operating system and browsers. The instructions state the operating system and browser version used during writing, but they might also apply to other versions.

Apple Safari

Check Apple Safari settings.

Google Chrome

Check Google Chrome settings.

Microsoft Edge

Check Microsoft Edge settings.

Mozilla Firefox

Check Mozilla Firefox settings.

macOS

Check local network access on macOS.

© 2026 The Qt Company Ltd. Documentation contributions included herein are the copyrights of their respective owners. The documentation provided herein is licensed under the terms of the GNU Free Documentation License version 1.3 as published by the Free Software Foundation. Qt and respective logos are trademarks of The Qt Company Ltd in Finland and/or other countries worldwide. All other trademarks are property of their respective owners.