プライバシーポリシー
すべての計算はお手元のブラウザ内で行われ、診断データが外部サーバーへ送信されることはありません。
クライアント処理で安全
すべての計算はお手元のブラウザ内で行われ、診断データが外部サーバーへ送信されることはありません。
ESC
FPS Test
Accurately measure your browser frame rate, average FPS, 1% lows, and instantaneous render stability.
Refresh Rate Test
Detect and verify your monitor native refresh rate in Hertz (60Hz, 120Hz, 144Hz, 240Hz, 360Hz+).
Monitor Test
Multi-stage screen assessment covering geometry, color gamut, gradients, text clarity, and contrast.
Screen Test
Rapid multi-step test patterns to verify color rendering, gray steps, viewing angles, and panel defects.
Dead Pixel Test
Identify dead (black), stuck (red/green/blue/white), and defective subpixels across full-screen solid fields.
Ghosting Test
Assess pixel response time, trailing artifacts, inverse ghosting (overshoot), and motion smearing.
Motion Blur Test
Evaluate sample-and-hold display motion blur, persistence, and black-frame insertion (BFI) clarity.
Backlight Bleed Test
Detect edge backlight leakage, corner IPS glow, and clouding in light-controlled conditions.
Screen Resolution Test
Detect physical screen resolution, CSS viewport dimensions, device pixel ratio, and color depth.
Screen Size Test
Calculate physical diagonal size (inches/cm), aspect ratio, and viewable surface area.
Color Test
Verify RGB/CMYK color reproduction, primary chromaticity, and wide color gamut (sRGB, DCI-P3, Rec.2020).
Contrast Test
Evaluate black level depth, white saturation, shadow detail retention, and step gradients.
Gamma Test
Verify display gamma curve (Gamma 1.8, 2.2, 2.4) using alternating subpixel luminance patterns.
Screen Flicker Test
Expose Pulse-Width Modulation (PWM) backlight flicker and temporal dithering artifacts.
Frame Time Test
Analyze frame duration in milliseconds (e.g. 16.6ms for 60Hz, 6.94ms for 144Hz) and frame time variance.
Frame Pacing Test
Detect frame delivery unevenness, micro-stutters, and presentation queue pacing anomalies.
Screen Tearing Test
Expose horizontal frame tearing lines and buffer synchronization mismatches across fast horizontal pans.
Frame Skipping Test
Verify if your monitor overclock or custom resolution is genuinely displaying all frames without dropping cycles.
HDR Test
Detect HDR display support, wide color gamut headroom, and peak luminance metadata.
Color Banding Test
Detect visible stair-stepping and posterization in subtle color and grayscale gradient ramps.
Screen Uniformity Test
Assess brightness consistency, color temperature balance, and dirty screen effect (DSE) across the panel.
Sharpness Test
Evaluate subpixel text clarity, edge aliasing, scaling halos, and moiré interference patterns.
PPI Test
Calculate exact pixel density (PPI), pixel pitch (mm), total megapixels, and optimal viewing distances.
WebGL FPS Test
Stress test your GPU rendering pipeline with dynamic WebGL geometry, particle simulation, and shader workloads.
Complete Screen Test
Automated step-by-step diagnostic workflow running dead pixel, uniformity, color, contrast, and motion tests in sequence.
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25 Precision Tools