Prisentrr 🎬

Real-time secondary display mirror for live demo presenters. See what your audience sees without turning around.

The Problem

Live demos have no presenter view. You're stuck either:

• Turning 180° to check the projector (awkward, breaks flow)
• Flying blind and hoping nothing breaks

The Solution

Prisentrr mirrors your secondary display to a popup on your primary screen. That's it. Glance, don't turn.

Features

• ⚡ Real-time capture via DXGI
• 👁️ Auto-hide when mouse leaves secondary display
• 🎛️ Customizable refresh rate (1–60 fps)
• ⌨️ Hotkey toggle
• 🔌 Auto-reconnect (plugged in your projector? it'll figure it out)
• 🖤 Blank hotkey (privacy in a pinch)
• ⚙️ Settings persistence (your config, saved)

Installation

1. Download latest release from Releases
2. Extract & run Prisentrr.exe

Usage

1. Start the app — runs in system tray
2. Connect external display (projector/TV)
3. Press hotkey to toggle mirror popup
4. Demo normally — glance at laptop screen to see audience view

Hotkeys

Action	Default
Toggle forced rendering	Ctrl+Alt+F
Blank secondary	Ctrl+Alt+C

Configuration

Use the tray icon or edit settings.json (generated on first run):

{
  "Fps": 30,
  "Scale": 1,
  "Location": "Auto"
}

Known Limitations

• Windows only (DXGI dependency)
• Tooltip/context menu layering (OS-level z-ordering)
• Predefined window sizes & transparency
• Predefined keybinds

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Seriously, That's It

This isn't a framework. It's not trying to be everything. It does one thing: let you see your demo without gymnastics.

If you need annotation, use ZoomIt. If you need recording, use OBS.

License

GPL 3.0. Read LICENSE