Straight answers
MacEdgeLight questions, answered.
What is MacEdgeLight?
MacEdgeLight is a native macOS menu bar app with two independent tools: an adjustable screen ring light for calls and recordings, and a display brightness boost for compatible EDR displays. It also includes a magnifier, cursor reveal, and desktop-icon controls.
What is the difference between the ring light and brightness boost?
The ring light adds a visible glowing border around your screen. Brightness boost changes how bright screen content can appear using available extended dynamic range. You can use either feature independently or use both together.
Can MacEdgeLight help people with low vision?
Extra screen brightness can make content easier to see for some people with low vision. Creator Richard Crane is vision impaired and uses the brightness feature to help see his screen. Results depend on your vision, display, settings, and available brightness headroom.
Which Macs support brightness boost?
The app requires macOS 13 Ventura or later and supports Apple silicon and Intel Macs. Brightness boost additionally requires a display that macOS reports as EDR-capable. Liquid Retina XDR MacBook Pro displays and Pro Display XDR are examples. The app marks unsupported displays; the ring light works without EDR.
Will brightness boost return after sleep or login?
Version 3.0.2 keeps your enabled preference through sleep, lock, and display changes, and retries recovery until your display and user session are ready. Enable Launch at Login to restore it after logout or restart. The app cannot boost a sleeping display or run after logout terminates it. Version 3.0.2 also queues rapid manual re-enables until 30 seconds after boost was turned off; the controls show Waiting during that interval.
Why does the amount of brightness boost change?
macOS controls the extended dynamic range headroom available above normal screen white. Brightness settings, display modes, ambient conditions, and thermal limits can change that headroom. MacEdgeLight adapts each display independently and uses a safety margin; it does not guarantee a fixed luminance or override hardware limits.
Does brightness boost affect Night Shift or True Tone?
While boost is active, its synthetic gamma ramp bypasses Night Shift, True Tone, and hardware calibration. Turning boost off restores the display’s ColorSync profile. Disable boost when you need your normal calibrated color response.
Is MacEdgeLight free, and does it require an account?
MacEdgeLight is free for uses permitted by the PolyForm Strict 1.0.0 license. No account or subscription is required. Download the signed and notarized app from GitHub Releases. Read the license for the full usage terms.
How do I turn brightness boost on or off?
Use Display Brightness Boost in the menu bar or control panel, or press Command–Shift–B. Command–Shift–L toggles the ring light separately. Five rapid, unmodified Q taps within two seconds quit the app and restore the display profile.