Observed arrival · 2026-08-27

Screenjack Turns Your Mac Into an HDMI Monitor

screenjack.app Observed source

Editorial interest 82/100 Selection signal · not a rating of the site

A Mac app that displays HDMI devices full screen through an inexpensive HDMI-to-USB capture adapter.

Landing page captured for the 2026-08-27 issue.

Field notes

The app treats any macOS-recognized camera input as a display source, routing HDMI video through a small USB capture adapter and rendering frames directly through Metal. It offers Fit, Fill, Stretch, and whole-number Pixel-perfect modes, plus audio passthrough controls and a test pattern. The site warns that HDCP-protected sources will show black and recommends wired audio because Bluetooth introduces delay.

Observed signals

Read the marks

Editorial observations of this landing page, not a rating.

○OpenPublic substance visible

$PaidCommerce or pricing visible

✦PrettyNotable craft visible

●ProPolished or operationally mature

◎NicheUnusually specific use

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