Test Information
The Aliasing test (also known as the Jaggies test) reveals how your monitor renders fine, angled lines. It is an essential diagnostic for gamers and digital artists to understand the inherent sharpness and scaling quality of their panel’s pixel grid.
🧷 Antialiasing Toggle (ON/OFF): Switch between raw “crisp edges” (1:1 pixel rendering) and smoothed, interpolated rendering.
🏎️ Rotation Speed (1–50°/s): Adjust how fast the line oscillates to check for motion artifacts during rotation.
📐 Angle Range (±1–90°): Set the arc of the oscillation. Small angles are best for finding subtle “stair-stepping.”
📏 Line Width (1–20px): Test how different line weights interact with the pixel grid.
🎨 Custom Colors: Use the color pickers to test aliasing under different contrast conditions (e.g., Red on Green).
〽️ Stair-Stepping (Jaggies): With Antialiasing OFF, look for jagged steps in the line. High-resolution 4K screens will show much smoother steps than 1080p screens.
🌊 Moire Patterns: At specific angles, you might see shimmering “ripples” along the line. This indicates a mismatch between the content resolution and the panel’s native pixel layout.
✨ Sharpening Artifacts: If you see bright “halos” or white shadows around the line, your monitor’s internal sharpening is set too high.
A high-quality monitor should render 1px lines with consistent thickness at all angles. If the line appears to “chunk” or get thicker at 45 degrees, your display might be performing internal scaling. Gaming at native resolution is the best way to minimize aliasing. If you see extreme jaggies, consider enabling software-level AA (like FXAA, TAA, or DLSS) in your games.
Online jaggies test, diagonal line aliasing tool, pixel mapping diagnostic, monitor sharpness evaluator. Works for OLED and LCD gaming monitors.