Device overview
Read browser-visible screen, processor, memory, language, connectivity, and platform signals in one place.
Open test
Browser-based · local-first · no account
Test the hardware in front of you.
Run focused checks for displays, input devices, audio, cameras, batteries, graphics, storage, and sensors. Save an inspection report locally and export it when you are done.
Your test data stays in this browser unless you export it.
HTL / PREFLIGHTLOCAL
19
DISPLAYREADY
INPUTREADY
MEDIAPERMISSION
REPORTLOCAL
NO UPLOADNO ACCOUNTEXPORTABLE
19working browser checks
6guided inspection flows
3fully linked locales
0required uploads
01 / DIAGNOSTICS
Popular hardware checks
Results are diagnostic signals, not a manufacturer certification or repair diagnosis.
Display geometry and scaling
Inspect viewport size, screen resolution, pixel ratio, orientation, color depth, and fullscreen behavior.
Open testOnline dead and stuck pixel test for monitors
Cycle solid red, green, blue, white, black, and neutral backgrounds to inspect the panel edge to edge.
Open testBacklight bleed and uniformity
Use black and low-gray fields to inspect bright corners, edge leakage, clouding, and viewing-angle effects.
Open testOnline monitor refresh-rate and frame-pacing test
Estimate the browser’s animation cadence and inspect frame-time stability with requestAnimationFrame.
Open testOnline keyboard event and rollover test
Record keydown and keyup events, inspect codes, and see how many simultaneous keys the browser receives.
Open test02 / WORKFLOWS
Guided inspection flows
NEW
New laptop acceptance check
A practical first-day sequence for confirming the visible specification, display, keyboard, pointing device, camera, microphone, audio, battery report, and graphics path.
Open flowUSED
Used laptop inspection
A conservative browser-assisted checklist for a second-hand laptop, with extra emphasis on display defects, input wear, battery evidence, ports, media devices, and cross-checking claims.
Open flowGAME
Gaming PC and setup preflight
Confirm refresh cadence, graphics acceleration, controller input, keyboard combinations, mouse events, audio routing, display geometry, and connection consistency before a longer benchmark.
Open flow03 / PRIVACY
Local-only by design
No account, upload endpoint, analytics SDK, or remote device fingerprinting. Camera and microphone streams are requested only after you press a test button.
- Local report storage
- Camera and microphone only after a click
- No third-party runtime requests
- Export JSON, standalone HTML, or print/PDF
04 / KNOWLEDGE
Evergreen hardware guides
Dead pixel vs. stuck pixel: what the screen pattern actually shows
A cautious way to separate persistent black points, color-locked subpixels, dust, reflections, scaling artifacts, and intermittent defects.
Read guideNew laptop first-day checklist
What to verify while return and exchange options are still simple: identity, exterior, display, input, media, battery evidence, ports, updates, and recovery.
Read guideHow to inspect a used laptop without over-trusting software
A layered inspection that cross-checks seller claims, visible condition, local reports, browser behavior, operating-system diagnostics, and a short real workload.
Read guideWindows battery report explained
Design capacity, full-charge capacity, cycle count, usage history, and why one “health percentage” is not the whole diagnosis.
Read guide