← All guides
sing-boxsetupswift-tunnel

How to Import a sing-box Configuration in Swift Tunnel

Learn how to import a sing-box configuration into Swift Tunnel, check its settings, and connect safely on Windows or Linux.

By Swift Tunnel · July 30, 2026 · 4 min read

Before you start

Swift Tunnel is a desktop tunnel client powered by the sing-box core. It does not provide servers or configurations itself: you bring a configuration from a provider or an administrator you trust.

Have the configuration ready as a subscription URL, a supported share link, a QR code, or a configuration file. Keep it private. A configuration can contain credentials, server addresses, and other connection details.

Import your configuration

  1. Open Swift Tunnel and choose Import.
  2. Select the format you received: paste a link, scan a QR code, or choose a local file.
  3. Review the imported profile name and server information before saving it.
  4. Choose the profile, then use Connect.

When a subscription URL is used, give the profile a clear name. It makes it easier to tell test profiles apart from the connection you use every day.

Check the profile before connecting

After import, confirm that the profile looks expected. In particular, check the protocol, server hostname, and port against the details supplied by the person or service that gave you the configuration. If anything looks unfamiliar, do not connect until you have confirmed it.

Swift Tunnel supports common sing-box-compatible protocols including VLESS, VMess, Trojan, Shadowsocks, Hysteria2, TUIC, WireGuard, and SSH. The correct choice is the one your configuration specifies; changing protocol settings at random is more likely to break a working profile than improve it.

If the connection does not work

Start with the simple checks: make sure the device is online, update the subscription if it has one, and confirm that the profile has not expired. Then read the connection status in Swift Tunnel and compare the server details with the source configuration.

Avoid sharing screenshots that contain a full configuration link. If you need support, remove credentials and private server information first.

Next step

Once the profile connects, test an ordinary website and keep Swift Tunnel up to date. The Swift Tunnel download page has the current Windows and Linux builds.