Test your monitor, keyboard and mouse issues in one place
PixelCheckup offers advanced test tools for your display, keyboard and mouse. Instantly detect problems like dead pixels, ghosting, double-click, scroll stutter and key detection issues.
Monitor tests, keyboard tests and mouse tests run entirely in your browser; no software install required. A fast, free and reliable hardware checkup platform.
Dead Pixel Scan
Use solid colors and contrast patterns to detect stuck / dead pixels; mark suspicious spots as pins.
Ghosting Test
Follow the fast-moving bar; if a trail remains, your panel has ghosting. Speed and background are adjustable.
Lightweight Report
Download your marked pixel locations as JSON/CSV, including basic screen metadata.
OLED Burn-in Check
Scan for permanent image retention on OLED with special gray tones and moving patterns. The test progresses in automatic stages and takes about 1–2 minutes. For best results, run it in fullscreen.
Keyboard Test
Measure key detection, anti-ghosting (N-key rollover) and typing speed to see how responsive and accurate your keyboard is.
Mouse Test
Analyze your mouse sensor and buttons with cursor trail, double-click, scroll wheel and CPS (clicks per second) tests.
Get started
Shortcuts: Space=Play/Pause · ←/→=Color · F=Fullscreen · ESC=Exit
Most Tested Displays
Top 10Aggregated by brand from user reports. “Model / Year / Ghosting” are taken from the most recent report. The Reports column shows how many reports exist for that brand.
| # | Brand | Model | Year | Ghosting | Reports |
|---|
Frequently Asked Questions (FAQ)
What is a dead pixel, and how is it different from a stuck pixel?
A dead pixel is completely non-functional and usually appears black. A stuck pixel is locked to a single color and never changes. PixelCheckup helps you detect both types of pixel issues.
What does the ghosting test do?
The ghosting test uses a fast-moving bar to reveal whether your display leaves a visible trail on motion.
Do I need to download any software?
No. PixelCheckup runs entirely in your browser and requires no installation.
How often should I run the OLED burn-in test?
If you use an OLED display, regular checks are recommended. PixelCheckup uses specific gray tones and moving patterns to help you spot early burn-in marks.
What can I measure with the keyboard test?
The keyboard test checks whether your key presses are detected correctly and helps you find ghosting and N-key rollover issues. It is ideal for testing gaming performance.
What can I check with the mouse test?
The mouse test lets you detect cursor stutter, double-click problems, scroll wheel issues and measure CPS (clicks per second). It helps you quickly spot hardware problems with your mouse.
Short info about PixelCheckup
PixelCheckup Screen Tests
PixelCheckup is a fast, browser-based tool for dead pixel and ghosting tests. Check for OLED burn-in and other display issues in just a few seconds.
After running the tests, you can browse user results on the Reports page and read more about dead pixels on this Wikipedia article.
What is PixelCheckup? How does it work?
PixelCheckup is a free, browser-based hardware testing platform designed to help desktop and mobile users quickly detect common issues related to displays, keyboards, and mice—without installing any software. All tests run directly inside your web browser.
The platform includes a Dead Pixel Test, a Ghosting (Motion Trail) Test, and an OLED Burn-in Test to help you spot visual panel issues. Using solid colors, moving patterns, and special test scenes, you can inspect your screen in detail.
PixelCheckup also provides keyboard and mouse performance tools.
With the Keyboard Test you can check:
Key detection accuracy
Ghosting / double-press behavior
Whether multiple simultaneous key presses are properly recognized (N-Key Rollover)
With the Mouse Test you can check:
Click detection
Double-click problems
Scroll wheel behavior
CPS (Clicks Per Second) and cursor movement behavior
PixelCheckup tests are based on user observation. The site is not directly affiliated with any hardware brand or manufacturer. Test results are for informational purposes and provide a quick first assessment of your hardware.
If you want, you can download results as JSON or CSV to report and compare later.
In the Guides (Blog) section, you can also find up-to-date, SEO-friendly content about topics such as: what dead pixels are, panel types (IPS/VA/TN), OLED technologies, and common keyboard/mouse performance issues.
Who is PixelCheckup for?
PixelCheckup is built for anyone who wants to quickly test monitors and peripherals in the browser. It’s useful for different user groups:
🎮 Gamers
Ghosting, dead pixels, key rollover issues, or mouse double-click problems can impact gaming performance.
PixelCheckup helps you validate your setup fast.
💻 Everyday users
If you bought a new monitor, laptop, keyboard or mouse, PixelCheckup helps you verify it works properly.
🧑💼 Office & remote workers
Long screen time makes display quality and input reliability critical. PixelCheckup helps spot issues early.
🛠️ Technicians & pre-purchase checks
Service shops and second-hand buyers can use PixelCheckup as a quick pre-check tool and export results for documentation.
PixelCheckup values transparency, privacy, and accessibility. Privacy policy and terms are provided on the site, and all tools are designed with user experience as the priority.