UnitCert is a free, browser-based hardware diagnostic tool for used Chromebooks, Windows laptops, and MacBooks. Run 8 standardized tests (keyboard, trackpad, screen, camera, mic, speakers, touch, network) in 60 seconds — no downloads, no sign-up. Every test generates a certified diagnostic report with a unique verification ID (UC-XXXXX). Think Carfax, but for laptops. Built for: - IT asset managers - Refurbished Laptop resellers - Individual buyers/sellers who want proof a device works