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Display testing documentation
Monitor and laptop screen diagnostics: pixels, motion, refresh rate and panel uniformity.
- 21 documented tools
- 0 downloads required
Overview
Check a monitor or laptop panel for dead pixels, motion smearing, flicker, tearing and uneven backlighting. These tests are visual: the browser draws a controlled pattern and you judge what the panel does with it, which is exactly how panel reviewers work.
All 21 display tools
Every tool below has its own documentation page and a link straight to the live tool.
Display FPS Test
Measure the frame rate your browser is actually delivering, with 1% lows and jitter.
- Available — Live on this site right now.
- Browser Tool — Runs in the browser you are reading this in.
- No Install — Nothing to download, no extension, no account.
- Client-Side — Runs entirely on your device. No test data is uploaded.
Refresh Rate Test
Estimate your display's refresh rate from frame timing, with a confidence level attached.
- Available — Live on this site right now.
- Browser Tool — Runs in the browser you are reading this in.
- No Install — Nothing to download, no extension, no account.
- Client-Side — Runs entirely on your device. No test data is uploaded.
Dead Pixel Test
Full-screen solid colours for finding dead, stuck and hot pixels by eye.
- Available — Live on this site right now.
- Browser Tool — Runs in the browser you are reading this in.
- No Install — Nothing to download, no extension, no account.
- Client-Side — Runs entirely on your device. No test data is uploaded.
Motion Blur Test
Moving patterns at controlled speeds, so you can judge how sharp motion stays.
- Available — Live on this site right now.
- Browser Tool — Runs in the browser you are reading this in.
- No Install — Nothing to download, no extension, no account.
- Client-Side — Runs entirely on your device. No test data is uploaded.
Screen Ghosting Test
High-contrast moving patterns that make trails and overshoot easy to see.
- Available — Live on this site right now.
- Browser Tool — Runs in the browser you are reading this in.
- No Install — Nothing to download, no extension, no account.
- Client-Side — Runs entirely on your device. No test data is uploaded.
Screen Flicker Test
Steady and alternating fields for spotting flicker, at brightness levels you choose.
- Available — Live on this site right now.
- Browser Tool — Runs in the browser you are reading this in.
- No Install — Nothing to download, no extension, no account.
- Client-Side — Runs entirely on your device. No test data is uploaded.
Screen Tearing Test
Scrolling patterns at chosen frame rates, so a torn frame becomes obvious.
- Available — Live on this site right now.
- Browser Tool — Runs in the browser you are reading this in.
- No Install — Nothing to download, no extension, no account.
- Client-Side — Runs entirely on your device. No test data is uploaded.
Display Response Time Test
Controlled colour transitions for judging pixel response, trailing and overshoot by eye.
- Available — Live on this site right now.
- Browser Tool — Runs in the browser you are reading this in.
- No Install — Nothing to download, no extension, no account.
- Client-Side — Runs entirely on your device. No test data is uploaded.
Backlight Bleeding Test
A pure black screen and a structured five-angle inspection for light leakage.
- Available — Live on this site right now.
- Browser Tool — Runs in the browser you are reading this in.
- No Install — Nothing to download, no extension, no account.
- Client-Side — Runs entirely on your device. No test data is uploaded.
Screen Uniformity Test
A thirteen-step sequence across brightness, grey and colour fields, mapped to nine zones.
- Available — Live on this site right now.
- Browser Tool — Runs in the browser you are reading this in.
- No Install — Nothing to download, no extension, no account.
- Client-Side — Runs entirely on your device. No test data is uploaded.
GPU Stress Test
Controlled WebGL2 graphics rendering stress test, real-time FPS telemetry, and frame stability.
- Available — Live on this site right now.
- Browser Tool — Runs in the browser you are reading this in.
- No Install — Nothing to download, no extension, no account.
- Client-Side — Runs entirely on your device. No test data is uploaded.
3D Rendering Performance Test
Benchmark your WebGL 3D graphics rendering performance, real-time FPS, frame timing, and pacing stability.
- Available — Live on this site right now.
- Browser Tool — Runs in the browser you are reading this in.
- No Install — Nothing to download, no extension, no account.
- Client-Side — Runs entirely on your device. No test data is uploaded.
GPU Benchmark
Run a real browser-based graphics benchmark to measure your GPU rendering performance, FPS, frame time, and WebGL capability.
- Available — Live on this site right now.
- Browser Tool — Runs in the browser you are reading this in.
- No Install — Nothing to download, no extension, no account.
- Client-Side — Runs entirely on your device. No test data is uploaded.
Stress My GPU
Push your GPU with a real WebGL2 ray-marching load and watch FPS, frame time and stability hold up — or drop off.
- Available — Live on this site right now.
- Browser Tool — Runs in the browser you are reading this in.
- No Install — Nothing to download, no extension, no account.
- Client-Side — Runs entirely on your device. No test data is uploaded.
Volume Shader Test
An interactive volumetric ray-marching shader you can tune live to see how your GPU handles heavy fragment work.
- Available — Live on this site right now.
- Browser Tool — Runs in the browser you are reading this in.
- No Install — Nothing to download, no extension, no account.
- Client-Side — Runs entirely on your device. No test data is uploaded.
Volume Shader Benchmark
A repeatable volumetric-shader benchmark with a warm-up, a transparent score and a controlled comparison mode.
- Available — Live on this site right now.
- Browser Tool — Runs in the browser you are reading this in.
- No Install — Nothing to download, no extension, no account.
- Client-Side — Runs entirely on your device. No test data is uploaded.
Particle System Performance Test
Render up to 500,000 GPU particles and measure how many your card can push before the frame rate falls.
- Available — Live on this site right now.
- Browser Tool — Runs in the browser you are reading this in.
- No Install — Nothing to download, no extension, no account.
- Client-Side — Runs entirely on your device. No test data is uploaded.
Shader Performance Test
Measure fragment-shader throughput with a real WebGL2 ray-marcher and a four-tier complexity sweep.
- Available — Live on this site right now.
- Browser Tool — Runs in the browser you are reading this in.
- No Install — Nothing to download, no extension, no account.
- Client-Side — Runs entirely on your device. No test data is uploaded.
Rendering to Texture Test
Stress your GPU's framebuffer and post-processing path with real multi-pass render-to-texture pipelines.
- Available — Live on this site right now.
- Browser Tool — Runs in the browser you are reading this in.
- No Install — Nothing to download, no extension, no account.
- Client-Side — Runs entirely on your device. No test data is uploaded.
Video Playback Test
Measure real video decode performance — presented, dropped and corrupted frames — using the browser's own playback-quality APIs.
- Available — Live on this site right now.
- Browser Tool — Runs in the browser you are reading this in.
- No Install — Nothing to download, no extension, no account.
- Client-Side — Runs entirely on your device. No test data is uploaded.
WebGPU Fuzzing Test
Probe your WebGPU driver and shader compiler with seeded, randomised real workloads and native error tracking.
- Available — Live on this site right now.
- Browser Tool — Runs in the browser you are reading this in.
- No Install — Nothing to download, no extension, no account.
- Client-Side — Runs entirely on your device. No test data is uploaded.
Where to go next
Pick a tool above to read its documentation, or open the live Display tools page to start testing straight away. The troubleshooting hub covers the problems that come up across more than one tool.
Display testing, without installing anything
Monitor and laptop screen diagnostics: pixels, motion, refresh rate and panel uniformity.