One command to a public URL
Install
One command installs the CLI globally on your machine.
Run
Point it at your local server. The TUI opens — sign in via the browser if needed.
Share
A public https URL appears instantly. Share it with anyone.
Built for developers
Everything you need to share your work
Instant tunnels
Get a public URL in seconds. No configuration, no port forwarding. Just works.
Custom subdomains
Choose your own subdomain or let us generate one. Your project, your brand, your URL.
HTTPS by default
Every tunnel gets a free SSL certificate. Your traffic is encrypted end-to-end.
Multi-tunnel dashboard
Run several tunnels at once. Watch live requests, latency, and errors from one screen.
Live metrics
Per-tunnel request counts, response times, bandwidth, and status — all updating in real-time.
Full-screen TUI
A Claude Code-style interface in your terminal. Keyboard-driven, no mouse needed.
How developers use PreviewBox
Demo day
Show your work to clients and stakeholders without deploying. Just tunnel your local dev server.
Webhook testing
Get Stripe, GitHub, or Twilio webhooks delivered to your local machine during development.
Team collaboration
Share your work-in-progress with teammates. No need to push to staging just for a quick review.
Mobile testing
Access your localhost from your phone on the same network or over the internet.
