DisplayPeek: Know exactly how your displays are configured.
What display configuration am I actually running?
The problem
Your external monitor looks soft, or you paid for 120 Hz. System Settings shows a slider and a list of scaled modes, but not a plain answer to “what is this display really running at?”.
The solution
DisplayPeek lists every connected display with its panel resolution, the “looks like” desktop resolution, the refresh rate and the scaling that results, plus anything else macOS reports about it. One click copies it all. Where macOS does not report a detail (such as cable type), DisplayPeek leaves it out instead of guessing.
Features
- Name, GPU, main display, mirroring and online state for every display
- Panel resolution and the “looks like” desktop resolution, with the refresh rate macOS reports
- Scaling worked out from the two: native, HiDPI (2×) or scaled
- Everything else macOS reports about the display, shown as reported; serial numbers are always left out
- Copy Display Details for support threads and bug reports
- Never invents cable, HDR or protocol details that macOS does not report
How it works
- Open DisplayPeek from the launcher.
- Each connected display gets a card with its configuration.
- Copy the details to share.
Installation
DisplayPeek is part of MacPeek. Install MacPeek, open Manage utilities and make sure DisplayPeek is switched on (it is on by default). There is nothing separate to download.
Privacy
What DisplayPeek reads:
- Display properties from macOS (via system_profiler), only while DisplayPeek is open
Access it needs: None.
Everything stays on your Mac: no account, no telemetry, no network access. Read the full privacy statement.
Open source
MacPeek and every utility in it are MIT-licensed. Read the code on GitHub, or see how a utility is built.
Related guides
Get DisplayPeek with MacPeek. Free and open source.