All Screen Test Tools

28 professional test tools · 10 solid-color screens · 6 device acceptance guides — all free, instant in your browser

Defect Detection

Dead Pixel Test

12-color fullscreen cycle finds stuck/dead pixels

Defect Detection

Backlight Bleed Test

Multi-level dark room 9-zone check vs IPS glow

Defect Detection

Burn-in Test

4 modes to reveal OLED burn-in / retention

Defect Detection

Blooming Test

Observe Mini LED local-dimming halos

Defect Detection

Black Level Test

Near-black RGB 1-10 squares + PLUGE

Color System

Monitor Color Test

12 fullscreen colors + custom HEX

Color System

Monitor Calibration

D50–D75 white points + 24-patch chart

Color System

Color Accuracy Test

12 sRGB reference patches + ΔE reading

Color System

Color Gamut Test

P3 vs sRGB boundary comparison

Color System

sRGB Test

ColorChecker 24-patch reproduction

Color System

DCI-P3 Test

Auto media-query detection + 6 P3 patches

Color System

RGB Channel Test

Per-channel purity & additive mixing

Greyscale / Depth

Greyscale Test

4–64 adjustable steps, dark/bright/uniform modes

Greyscale / Depth

Gradient Test

Linear / radial / hue-wheel smoothness

Greyscale / Depth

Color Banding Test

Lossless GPU gradients, 6 modes

Greyscale / Depth

Color Depth Test

Tell 8-bit from FRC dithering

Greyscale / Depth

Contrast Test

Count near-black RGB 1-16 squares

Greyscale / Depth

Brightness Test

11-step luminance ladder + 9-zone uniformity

Greyscale / Depth

Gamma Calibration

Stripe-fusion comparison against γ2.2

Motion / Performance

Refresh Rate Test

Live FPS meter + frame-time graph

Motion / Performance

Ghosting Test

Motion blur trails & overdrive overshoot

Motion / Performance

Screen Tearing Test

Fast stripes, VSync/VRR comparison

Motion / Performance

Flicker Test

PWM five-step patches + camera method

Motion / Performance

HDR Test

Auto capability check + dynamic range

Motion / Performance

Touch Screen Test

Multi-touch, drawing & dead-zone grid

Info / Calculators

Resolution Checker

Physical/logical res, DPR, Hz auto-read

Info / Calculators

Screen Size Calculator

PPI, physical size & area

Info / Calculators

Aspect Ratio Calculator

Resolution ↔ ratio with visualization

Solid Color Screens

Device Acceptance Guides

Laptop Guide8-step acceptance flow for new laptops

Mobile GuidePhone & tablet screen checklist

TV GuideAcceptance criteria for big-screen TVs

Monitor GuideGaming & design monitor checks

OLED GuideBurn-in & uniformity checks

LCD GuideIPS / VA / TN panel acceptance

Start Here

Not sure where to start?

New Device Unboxing

8-step wizard: dead pixels → bleed → greyscale → gamut → refresh rate → ghosting → black level → verdict. Pro acceptance in 20 minutes.

Start the Wizard

Second-hand Deal

Dead pixel + backlight bleed + burn-in triple check to expose hidden screen flaws sellers won’t mention.

Dead Pixel Test

Esports Tuning

Refresh rate + ghosting + tearing triple check to verify high refresh, VRR and Overdrive settings.

Refresh Rate Test