flash-tunnelLocal to live.
In one command.

Turn your local dev server into a shareable preview. Detect, connect, and clean up — all from your terminal.

Get started

View on GitHub ↗

~/your-next-ideazsh

npx flash-tunnel --mode quick

✓ detect Vite · pnpm · :5173

✓ local http://localhost:5173

✓ tunnel Cloudflare · quick

https://your-preview.trycloudflare.com

Copy the link. Share the idea. Ctrl+C to clean up.

No token. No config file.

Illustrative output · a new temporary URL on every run

Your project, detected

Finds your framework, package manager, scripts, and port. Works with Vite, Next, Nuxt, Astro, static sites, and more.

Explore local servers

A link that fits

Get a temporary URL without a token, or use your own domain with Cloudflare Tunnel and automatic DNS setup.

Choose a tunnel mode

Share it. Then leave.

Exit to remove DNS records, tunnels, and child processes. A watchdog and startup sweep help recover interrupted sessions.

Understand cleanup

FROM YOUR TERMINAL TO THEIR BROWSER

The whole workflow. One command.

Detect

Find the framework, script, and port.

Connect

Start the tunnel. Verify the public URL.

Let teammates open your preview.

Clean up

Remove DNS, tunnel, and child processes.

PICK YOUR PATH

A quick demo or your own domain?

The same workflow, on your terms.

QUICK

Share something now

A temporary public URL without an account or token. Great for demos and collaboration.

Get started NAMED

Make it your domain

Connect your Cloudflare account. Create a tunnel and DNS record with a recognizable preview URL.

Set up a custom domain

EARLY PREVIEW

flash-tunnel is in early preview (0.0.x). APIs and behavior may change. Help us shape what comes next. Share feedback

flash-tunnelLocal to live.In one command.