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Find Dead Pixels & Screen Defects in Seconds

Free online display and touchscreen tests for any monitor, phone, TV, or laptop. Private, fast, and browser-based.

START DISPLAY TEST↵TEST TOUCHSCREEN→

LIVE SCOPE v2.4

VSYNC: -- Hz

Sub-Pixel GridRGB

DPR: 1.0xPITCH: 0.18mm

MOVE CURSOR TO INSPECT

TELEMETRY INSPECTOR (REAL-TIME)

HARDWARE POLLING @ 1000HZ

Display and GPU hardware telemetry readouts
Metric	Acquired Value	Standard Target	Status
Screen Resolution	Detecting...	ISO 9241-307	OK
Device Pixel Ratio	Detecting...	HiDPI Retina	SCALED
V-Sync Refresh Rate	Measuring...	IEC 62341 Sync	ACTIVE

Symptom Selector

Find Your Test by Screen Issue

Click or press hotkeys [1-6] to launch

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[ 02 ]2

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[ 06 ]6

Diagnostic Instrument Panels

3 CORE DOMAINS

[ 01 / DISPLAY ]12 TESTS

Display & Panel Uniformity

Evaluate sub-pixel geometry (RGB/BGR/OLED), Gray-to-Gray luminance uniformity, backlight bleed, and stuck sub-pixel defects.

LAUNCH DISPLAY SUITE→

[ 02 / TOUCH ]6 TESTS

Touch Digitizer & Latency

Measure multi-touch point limits, dead-zone coordinate mapping, swipe vector line jitter (RMS deviation), and touch response latency.

LAUNCH TOUCH SUITE→

[ 03 / BENCHMARKS ]ARCADE

Interactive Stress & Motion

Interactive precision tests: VSync frame rate stress tester, reaction time latency benchmark, and high-frequency motion tracking.

LAUNCH ARCADE SUITE→

Engineering Standards Compliance Spec Grid

CLIENT-SIDE VERIFIED

ISO 9241-307:2008Class 0-II

International standard for pixel defect classification and visual ergonomics.

[ SUB-PIXEL LOUPE ENGINE ]

VESA DisplayHDR 1.2EOTF / Nit Range

Luminance response profiling and wide color gamut dynamic range evaluation.

[ 240HZ FRAME SAMPLER ]

IEC 62341-6-2OLED Decay

OLED dynamic contrast and sub-pixel luminance decay measurement.

[ UNIFORMITY MATRIX ]