Infoscreen4
A real-time infoscreen system for LAN parties. Build slides in the browser and publish them to any number of screens from one admin view.
What it does
Infoscreen4 runs as one Node.js server on your LAN. Each screen opens a browser page (/display/<id>). An operator uses /admin to decide what each screen shows. Updates reach the screens instantly over WebSockets, with no page reloads.
| Feature | Description |
|---|---|
| Real-time sync | Slide changes, announcements and streams reach displays instantly via Socket.IO. |
| Multiple displays | Each display plays its own bundle, and you control each one separately. |
| Bundles | Ordered playlists of slides with shared background, size, duration and transitions. |
| Visual editor | Fabric.js editor for text, images, videos, shapes and colors. |
| Slide types | Editor slides, full-screen videos, and embedded websites. |
| Scheduling | Limit slides to a date range or a daily time window. |
| Announcements | Lower-third overlay messages for one display or all of them. |
| Live streaming | Share a camera or screen from /send to any display over WebRTC. |
| No database | All content is plain JSON and media files under data/. |
Where to go next
- Installation: run Infoscreen4 with Node.js, Docker or PM2.
- Configuration: environment variables, HTTPS and the data directory.
- Admin guide: displays, bundles, playback and announcements.
- Slide editor: build slides and learn the keyboard shortcuts.
- Security: access model, and what to do before you run Infoscreen4 on the internet.
Tech stack
Next.js 16 · React 19 · Socket.IO 4 · Fabric.js 7 · Tailwind CSS 4 · TypeScript