Monitor Test Suite

Twenty free, browser-based tests to check every aspect of your display — colour, motion, and panel quality. No download, no sign-up. Start with the dead pixel test or pick a test below.

Colour & Calibration

Calibration

Guided visual calibration for brightness, contrast, gamma and colour

Colour Accuracy

Judge hue, saturation and grey balance on solid fields

Colour Temperature

Check for a warm or cool white point

White Balance

Neutralise tinted greys and whites

Gamma

Verify the 2.2 midtone brightness curve

Brightness

Peak nits, APL dimming and uniformity

Contrast

Black levels and contrast ratio

Motion & Gaming

Refresh Rate

Confirm your true Hz and frame pacing

Response Time

Grey-to-grey pixel transition speed

Motion Blur

Perceived blur during fast motion

Ghosting

Trailing artifacts and inverse ghosting

Input Latency

Display processing lag

Panel Quality

Backlight Bleed

Edge and corner light leak vs IPS glow

Uniformity

Brightness and colour evenness across the panel

Clouding

Cloudy patches on dark backgrounds

Burn-In

OLED image retention check

Viewing Angle

Colour and brightness shift off-axis

Pixel Grid

Subpixel layout and screen-door effect

Convergence

Subpixel alignment and colour fringing

Geometry

Straight lines, alignment and scaling