CapNSend Screencast


CapNSend is a lightweight tool to capture a screenshot of your desktop and transmit it to a remote location for display. It consists of:

  • Transmitter: Create and transmit your desktop screenshot.
  • Viewer: Accept the transmitted screenshot and display it.

CapNSend runs on Microsoft Windows and is written with C++/MFC.

Using CapNSend

The Transmitter is designed to be activated by third-party programs such as a hotkey trigger tool (AutoHotKey). When user presses a hotkey, the Transmitter captures and transmit the screenshot.

Install and run the viewer on the computer where you want to the screenshot to be displayed.

To transmit the desktop screenshot, configure your third-party program to execute the command:

CapNSendServer.exe [Viewer IP Address]


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A personal dev blog by C.J. Ng