Inspect practical on-screen text rendering clarity, edge sharpness, and subpixel color fringing. Evaluates how your display handles typography across various font sizes and contrast pairings under your current OS scaling settings.
Inspect text strokes at varying point sizes for color fringing, haloing, or blur.
Clean modern UI typography uses subtle anti-aliasing. Look closely at vertical stems (l, t, k) and curves (e, o, s) for color fringing.
Thin serifs and high-contrast stroke transitions test fine pixel resolution. Fine horizontal hair-strokes should remain crisp without breaks.
const delta = Math.sqrt(x * x + y * y);
if (delta < threshold) return true;
Text clarity depends heavily on operating system font anti-aliasing engines (such as Microsoft ClearType or macOS Core Graphics) and display scaling factors. Subtle color fringing on non-standard subpixel layouts (like BGR or OLED pentile/triangular arrangements) is an inherent optical characteristic of font subpixel rendering algorithms, not a defective display panel.
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.
Detect non-uniform stretching, egg-shaped circles, and aspect ratio mismatches.
