Explore our complete library of monitor testing utilities. All tests run locally in your browser.
Fill the screen with solid colors to easily spot stuck or dead pixels on your monitor.
Attempt to revive stuck subpixels by rapidly cycling high-contrast colors in the affected area.
Examine dark screens to locate hot or bright subpixels permanently stuck open.
Inspect OLED and LCD displays for persistent shadow outlines, static HUD retention, and panel burn-in.
Targeted visual stimulation tool using high-speed color cycling to assist with temporarily stuck sub-pixels.
Assess color rendering and saturation using primary and secondary color patterns.
Test monitor ability to render neutral grays without color tinting.
Assess color vibrancy and detect banding in high-saturation gradients.
Check for smooth transitions in gradients to test your panel's true bit-depth capabilities.
Inspect wide color gamut support and verify rich saturation rendering without clipping.
Verify color balance and skin tone rendering against industry standard sRGB and wide gamut reference swatches.
Tune your black levels and white point to ensure no detail is lost in the extreme ranges.
Evaluate contrast ratio, color separation, and gradient steps across 25 dynamic levels.
Tune your monitor's black levels to ensure dark details aren't crushed.
Tune your monitor's contrast to ensure bright details aren't clipped.
Visually estimate your monitor's gamma tracking (target 2.2 for sRGB).
Fill your screen with pure primary, secondary, black, and white fields to inspect overall panel cleanliness.
Evaluate IPS, VA, OLED, and TN panel color fidelity and contrast stability when viewed from wide angles.
Check pixel response times and overdrive artifacts with high-speed moving elements.
Check pixel response times and overdrive artifacts with high-speed moving elements.
Verify that your monitor and browser are actually running at their maximum refresh rate.
Check for horizontal tear lines during motion to verify active V-Sync, G-Sync, FreeSync, or VRR support.
Inspect display backlight for high-speed PWM flickering, strobe effects, and subtle luminance fluctuations.
View detected resolution, color depth, pixel ratio, and HDR capabilities of your display.
Verify your browser and OS correctly detect HDR and Wide Color Gamut.
Test touchscreen touch points, responsiveness, dead touch zones, and multi-finger gestures online.
Check display scaling, subpixel font rendering, and edge sharpness with 1-pixel alternating line patterns.
View detected resolution, color depth, pixel ratio, and HDR capabilities of your display.
Generate customizable test patterns with adjustable grids, gradients, geometry, and color bars.
Visually inspect variable refresh frame pacing, tearing, and judder under dynamic animation workloads.
Controlled visual test for specular highlight clipping, tone mapping rolloff, and wide gamut rendering.
Evaluate subtle dark-tone separation, black crush, and near-black gradation above true black.
Detect harsh tonal stepping, quantization lines, and color shifts across smooth linear gradients.
Evaluate font rendering sharpness, edge halos, and subpixel color fringing across sizes.
Identify Dirty Screen Effect (DSE), vignetting, and uneven backlight distribution.
Detect IPS glow, clouding, and light leakage from the bezel in a dark room environment.
Detect edge cropping and scaling distortion when connecting PCs or laptops to televisions.
Detect non-uniform stretching, egg-shaped circles, and aspect ratio mismatches.
Test simultaneous multi-finger touch points, digitizer tracking, and contact registration.
Inspect live 3-axis linear acceleration and gravity vectors reported by device motion sensors.
Inspect device angular rotation, roll, pitch, and yaw angles via browser orientation APIs.
Test tactile vibration motor feedback and custom vibration patterns with safe duration limits.
Live camera stream preview, resolution verification, and local private snapshot check.
Verify left and right stereo audio channel separation, frequency response, and output balance.
Verify microphone input functionality, live level metering, waveform activity, and digital clipping.
