Refresh Rate & Monitor Ghosting Test
Evaluate pixel response times, stuttering, and monitor panel ghosting with our horizontal glide simulator.
Motion Test Parameters
Adjust movement speed and analyze display trailing artifacts.
Diagnostic Guide
- Ghosting: If you see a faint trail (or shadow) following the moving blocks, it means the display pixels cannot switch colors fast enough. Common in older VA/IPS panels.
- Stuttering/Jitter: If the block doesn't glide smoothly and seems to jump, frames are being dropped or the browser V-Sync is lagging.
- Overshoot trailing: A glowing light trail (inverse ghosting) behind the block suggests the monitor's response time overdrive is set too high in monitor hardware settings.
Comprehensive Guide to Online Monitor Motion & Hz Testing
Modern high-refresh-rate displays promise butter-smooth gaming and fluid scrolling. However, raw specifications don't tell the entire story of screen performance. Running a specialized monitor motion test allows you to evaluate your monitor's pixel response times, panning clarity, and frame-rate delivery. Conducting a regular monitor Hz test online is the most convenient way to verify if your screen is actually operating at its full hardware capability.
What is a Monitor Motion Test?
A motion test checks how your screen handles fast-moving images. In a perfect display, a moving object would remain razor-sharp. In reality, because pixels require a fraction of a millisecond to switch from one color to another, moving elements can display blur or trailing. By running our horizontal glide simulator, you can visually inspect your monitor for "ghosting," which appears as a faint shadow or smear trailing behind the moving blocks.
Measuring Refresh Rates and Frame Integrity
Our browser-based testing engine utilizes standard web APIs (specifically `requestAnimationFrame`) to align our render loop with your monitor's physical refresh rate. The FPS counter displayed inside the viewport measures how many frames the browser renders per second. If you have a 144Hz monitor, the counter should ideally stabilize close to 144 FPS. If the FPS counter fluctuates significantly or drops frames, it indicates hardware bottlenecks, browser GPU acceleration being disabled, or V-Sync mismatch.
Display Technologies and Ghosting Characteristics
Different monitor panel types exhibit unique motion artifacts. VA (Vertical Alignment) panels are infamous for "dark smearing," where dark objects moving across grey backgrounds leave heavy black trails due to slow transition times. IPS (In-Plane Switching) panels generally offer faster transitions but can still exhibit minor ghosting. TN (Twisted Nematic) panels traditionally offered the fastest response times among LCDs. Modern OLED displays are the gold standard for motion clarity, boasting near-instantaneous sub-millisecond response times, resulting in zero visible ghosting.
Pixel Overdrive and Overshoot Trailing
To combat ghosting, many monitor manufacturers build "overdrive" (or response time acceleration) settings directly into the screen OSD menu. Overdrive works by applying higher voltage spikes to pixels to force them to switch states faster. While this reduces trailing, setting overdrive too high causes "pixel overshoot." Overshoot trailing shows up as a bright, glowing "inverse ghosting" ring behind the moving block. If you notice glowing borders behind the red or white squares in our test, access your monitor's hardware menu and lower the overdrive settings to a moderate level.
How to Optimize Your Display for Smoother Motion
If your motion test reveals stuttering or low frame rates:
- Verify OS Settings: Right-click on your desktop, select Display Settings > Advanced Display, and ensure your Refresh Rate dropdown is set to its maximum (e.g. 120Hz or 144Hz) rather than defaulting to 60Hz.
- Enable VRR: Turn on Variable Refresh Rate technologies like NVIDIA G-Sync or AMD FreeSync in your GPU control panel to eliminate screen tearing.
- Enable Hardware Acceleration: Check your web browser settings to verify hardware GPU acceleration is enabled, as this is required to run high-frame-rate web canvas loops smoothly.