Guides
Step-by-step checklists that chain our free browser tools together for a specific job.
- How to Test a Used Laptop Before Buying A 10-minute browser checklist — battery, screen, keyboard, camera, audio and GPU — to run before you pay a seller.
- How to Test a Used iPhone Before Buying Activation lock, IMEI, battery health, burn-in, touch, cameras and sensors — the two checks that can make a phone worthless come first.
- How to Test a Used Monitor Before Buying Dead pixels, backlight bleed, OLED burn-in, real refresh rate, colour and ports — the faults you cannot see on a normal desktop.
- How to Test a Used MacBook Before Buying Activation Lock and MDM enrolment first — the checks that can make a Mac worthless — then battery cycles, screen, keyboard, camera and ports.
- How to Test a Used Graphics Card Before Buying Spot re-flashed fakes from the renderer string, catch artifacts and VRAM errors, read load temperatures and benchmark deficits before you pay.