Do I need to install software to use MonitorTest?

No. MonitorTest runs fully in the browser, so there is nothing to install and the core tests work client-side.

What can I test with MonitorTest?

You can test dead pixels, IPS glow, ghosting, tearing, gamma, black levels, white levels, input lag demos, uniformity and other display artifacts.

Can I use MonitorTest on a phone or laptop?

Yes. The platform works on monitors, TVs, laptops, tablets and phones. On touch devices, tap the screen to reveal the controls when needed.

Test Your Display Down To The Smallest Detail

MonitorTest is a 100% browser-based, client-side display testing platform with 16 visual checks for pixel defects, panel artifacts, calibration and motion performance.

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1. Defect & Artifact Tests

Dead & Stuck Pixel Test

Cycle pure colors to locate permanently dark, glowing, or stuck RGB sub-pixels.

IPS Glow / Light Bleed

Output true black. Check for uneven lighting or 'glowing' seeping from panel corners in a dark room.

OLED Burn-in & Retention

Use 50% gray and deep red screens to spot ghosted UI elements (taskbars/HUDs) permanently etched into your OLED.

Screen Tearing (V-Sync)

Use rapid horizontal movement to compare visible tearing while changing V-Sync or VRR settings; this does not certify that either feature is working.

Panel Uniformity / Dirty Screen

Test for the "Dirty Screen Effect" (DSE). Colors should look identically bright from corner to corner.

Stuck Pixel Fixer Tool

Forces a localized strobe at 60Hz. It has a chance to revive stubbornly stuck (not dead) sub-pixels.

2. Calibration & Gamut Tests

Gamma Calibration (2.2)

Verify if your display is accurately targeting a 2.2 Gamma curve using visual blend blocks to ensure correct brightness.

Black Saturation (Black Crush)

Check if you can distinguish RGB 1 from RGB 0. Critical for dark movie scenes and horror games.

White Saturation (Blooming)

Check if extreme RGB 254 details are blooming into pure white, causing you to lose highlight detail.

Color Banding (8-Bit / 10-Bit)

Check for smooth color gradations without distinct stepped 'bands' to evaluate your panel's bit depth.

Color Distance / Contrast Ratio

Evaluate exact color separation thresholds between distinct hue values on the sRGB spectrum.

3. Motion & Sub-pixel Rendering

UFO Ghosting & Overdrive

Track fast-moving UFO objects. Test your overdrive setting; too low causes smearing, too high causes inverse halos.

Response Time / Input Lag Demo

Test the visually perceived delay between an instant click action and the pixel color changing on screen.

Viewing Angle Washout (TN/VA/IPS)

View geometric patterns from sharp off-center angles to identify extreme color wash-out specific to your panel type.

Sub-Pixel Rendering & Text Clarity

Micro-text and 1px lines help identify anti-aliasing issues caused by non-standard RGB sub-pixel layouts like BGR.

Pixel Inversion / Moire Flicker

Examine tight checkerboards to see if screen flickering occurs due to LCD voltage inversion cycles.

Calculate, test and keep the result

Go beyond solid-color screens: compare pixel density and collect your visual checks in a report you can keep.

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PPI and pixel-pitch calculator

Calculate PPI, pixel pitch, physical panel dimensions and an approximate angular threshold.

Open calculator →

Local report

Printable monitor test report

Record pixel, uniformity, backlight and motion observations; download the summary or print it to PDF.

Create report →

Dead Pixel Test and the Dead Pixel Guide · Ghosting Test and the Ghosting Guide · IPS Glow Test and the IPS Glow Guide · Screen Tearing Test and the Screen Tearing Guide