Screen Tests

Run browser based screen tests for dead pixels, backlight bleed, uniformity, gradients, OLED near black performance, touch input and display information.

Screen Tests

• Complete Screen Test. Walk through white, black, primary colors, gray, gradients and contrast patterns to inspect a display in one guided session. Open fullscreen
• Dead Pixel Test. Cycle solid colors in fullscreen to reveal dark dead pixels, bright hot pixels and color defects that normal content can hide. Open fullscreen
• Stuck Pixel Test. Use controlled color fields to identify a pixel or subpixel that stays lit in the wrong color and compare it with a true dead pixel. Open fullscreen
• Backlight Bleed Test. Inspect a dark LCD in a dim room for fixed bright edges, corner glow and clouding while separating bleed from viewing angle effects. Open fullscreen
• Screen Uniformity Test. Use white and gray fields to inspect brightness, tint and panel consistency across the center, edges and corners. Open fullscreen
• Gradient and Banding Test. Display smooth gray and color gradients to look for visible steps, posterization and banding across tonal transitions. Open fullscreen
• Color Channel Test. Check red, green and blue channels separately so a failed or inconsistent subpixel is easier to isolate. Open fullscreen
• OLED Near Black Test. View controlled dark gray levels that can reveal OLED near black banding, tint and unevenness that pure black may hide. Open fullscreen
• Display Information. Read browser reported resolution, viewport, pixel ratio, color depth and an estimated refresh rate without installing software. Open fullscreen
• Touch Screen Test. Trace touches or pointer movement across the surface to find areas that do not register input consistently. Open fullscreen
• White Screen Image Generator. Create a pure white image in common resolutions or custom dimensions and export it in PNG, JPG, WebP or SVG. Open fullscreen
• Screen Light. Turn the display into an adjustable white or warm light source for video calls, photography, tracing and close work. Open fullscreen
• Refresh Rate Test. Estimate the active browser refresh rate from animation timing and watch for an unstable cadence without installing software. Open fullscreen
• Motion and Ghosting Test. Follow a moving target to compare visible trailing, smearing and response behavior across display modes and refresh settings. Open fullscreen
• Sharpness and Geometry Test. Use one pixel lines, fine grids and checker patterns to inspect scaling, sharpness, geometry and pixel mapping at a glance. Open fullscreen
• Black and White Levels Test. Show controlled near black, near white and gray steps to check whether shadow and highlight levels remain distinguishable. Open fullscreen