Ten checks · all free · nothing installed
Every test, in one place
Each of these runs entirely in your browser, on the Mac in front of you. Nothing is uploaded, nothing is stored on a server, and they all work with no signal at all — which matters, because these inspections happen in car parks.
Check a Used MacBook for Activation Lock & MDMRun one read-only command — no password needed — to check a second-hand MacBook for iCloud Activation Lock, company MDM enrolment, battery cycle count and SSD health. The checks a website cannot do on its own.MacBook Screen Test — Dead Pixel & ProMotion CheckerRun a full-screen dead pixel sweep and verify true 120Hz ProMotion on a used MacBook Pro. Cycles white, black, red, green, blue and grey to expose stuck subpixels, staingate and backlight defects.MacBook Keyboard Test Online — Check Every Key WorksTest every key on a used MacBook keyboard in your browser. Detects dead keys, sticky keys, repeat faults and rollover on both ANSI and ISO Magic Keyboard layouts, The Fn key and OS-reserved function keys are excluded, so a healthy keyboard is never reported as faulty.MacBook Trackpad Test — Force Touch & Gesture CheckerCheck a used MacBook trackpad for dead zones, failed Force Click pressure and broken multi-touch gestures. Draw across the full glass surface to find unresponsive corners before you buy.MacBook Speaker Test — Stereo Check & 20Hz–16kHz SweepTest used MacBook speakers for blown woofers, rattle and dead channels. Runs a 20Hz to 16kHz frequency sweep plus left, right and centre stereo isolation at 440Hz.MacBook Microphone Test Online — Record & Play BackTest a used MacBook microphone array in your browser with a live volume meter and instant 3-second playback. Confirms all mics pick up sound before you hand over cash. Audio never leaves your Mac.MacBook Camera Test — FaceTime HD Webcam CheckerTest a used MacBook webcam online. Shows the live feed with real resolution, aspect ratio and frame rate so you can confirm a genuine 1080p FaceTime HD camera and spot a failing sensor.MacBook USB-C & Thunderbolt Port TestCheck every USB-C, Thunderbolt, MagSafe, HDMI and SDXC port on a used MacBook for charging and data faults. The ports are soldered to the logic board, so a dead one is an expensive repair — and no other test will find it.MacBook Stress Test — M-Series GPU & Thermal BenchmarkRun a five-minute GPU and thermal stress test on a used Apple Silicon MacBook. Measures how much speed it keeps once hot, which is what exposes a failed fan or dried-out thermal paste — a thirty-second test will pass a Mac with no working cooling at all.
Or let it walk you through them
The guided inspection runs every test above in order, on one page, and scores the machine at the end — including what each fault is worth off the asking price. The cooling test runs in the background while you work through the rest, so the whole thing still fits in about five minutes.
Start the guided inspection