Display Quality Lab
Inspect pixels, uniformity, geometry, sharpness, color, contrast, gradients and tonal performance directly in your browser.
ScreenCheck Reference Pattern
Comprehensive all-in-one diagnostic reference pattern for geometry, sharpness, pixel mapping, grayscale, and color.
Stuck Pixel Test
Identify locked or anomalous subpixels with high-contrast color switches and optional pixel color cycling.
Subpixel Inspection
Inspect subpixel rendering, stripe layouts (RGB vs BGR), and text fringe clarity.
1:1 Pixel Mapping Test
Reveal interpolation, non-native scaling, and sharpness artifacts with 1px checkerboards.
Panel Uniformity Test
Inspect edge-to-edge brightness and color tint consistency across 10% to 90% grayscale fields.
Dirty Screen Effect Test
Expose panel clouding, vertical banding, and DSE with smooth panning grayscale fields.
Viewing Angle Test
Evaluate gamma shift, color tint degradation, and contrast loss from off-axis angles.
Inversion / Pixel Flicker Pattern
Check panel pixel inversion voltage balancing and avoid visible pixel shimmer or crosstalk.
RGB / CMY Color Suite
Inspect primary and secondary color purity, channel clipping, and saturation ramps.
Grayscale & Tonal Ramp Test
Assess grayscale neutrality, tonal transitions, and step distinction across continuous and stepped ramps.
Gamma Calibration Test
Visually estimate display gamma curve (1.8, 2.0, 2.2, 2.4) using mathematical luminance matching.
Black Level & Shadow Crush Test
Determine whether near-black shadow detail is being crushed into solid black.
White Saturation & Highlight Clipping Test
Verify that bright highlight tones remain distinguishable without clipping.
Visual Contrast Test
Inspect simultaneous near-black, mid-tone, and near-white steps on one screen.
Shadow Detail Test
Examine subtle dark gradients and geometric contours in low-luminance scenes.
Highlight Detail Test
Evaluate bright geometric contours and high-luminance detail retention.
Digital Color Separation Test
Visually inspect whether adjacent digital RGB shades remain distinguishable.
Dithering & FRC Inspection
Detect temporal Frame Rate Control (FRC) and spatial dithering noise on fine gradients.
Sharpness & Oversharpening Test
Identify white haloing, edge ringing, or blurry text caused by monitor sharpness settings.
Text Clarity & Subpixel Antialiasing
Inspect font rendering sharpness across font sizes, weights, and contrast themes.
Fine Line & Spatial Frequency Test
Examine 1px and 2px vertical, horizontal, diagonal, and crosshatch line rendering.
Checkerboard Pattern Test
Test spatial frequency and scaling with 1x1, 2x2, 4x4, 8x8, and 16x16 pixel blocks.
Geometry Grid & Alignment Test
Check for geometric distortion, non-linear stretching, and alignment with precision grids.
Aspect Ratio & Scaling Verification
Verify proper 16:9, 16:10, 21:9, and 32:9 proportions without stretching.
Visual Calibration Assistant
Step-by-step visual calibration procedure for monitor brightness, contrast, gamma, and sharpness.