Hardware Testing & Diagnostic Tools

Verify the status of your peripherals and display with free online tools. Test dead pixels, keyboard ghosting, gamepad drift, and battery health.

Dead Pixel Test and Screen Repair Tool

Check if your monitor has dead or stuck pixels and repair them with our high-frequency strobe tool online.

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Online Keyboard Test & Ghosting Detector

Check if your keyboard suffers from Ghosting or Key Jamming. Real-time key visualizer and N-Key Rollover counter.

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Online Gamepad & Controller Test

Test your Xbox, PlayStation or PC controller. Visualize dead zones, joystick drift and buttons.

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Online Gamepad Vibration Tester

Test the haptic motors and Dual-Rumble vibration of your gamepad in the browser. Supports Xbox, DualShock, DualSense and generic controllers.

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Online Mouse Polling Rate Test

Check the real Hz of your mouse. Verify if your gaming mouse works at 1000Hz or more with our professional tool.

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Lithium Battery Health Calculator

Calculate the State of Health (SoH) of your lithium battery based on cycles, voltage and temperature. Scientific guide to maximize energy longevity.

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Online Tone and Frequency Generator

Generate sine, square, triangle and sawtooth waves. Test your speakers, headphones or subwoofer with frequencies from 20Hz to 20kHz.

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# Diagnostic Peripherals and Displays: Precision Without Software

Maintaining hardware no longer requires installing heavy diagnostic applications. In this section, we offer a suite of free online tools designed to test your components using native web APIs. From detecting LED panel fatigue to measuring polling rates of gaming peripherals, we apply standard testing protocols so you know the real state of your equipment.Our utilities are ideal for users who just purchased a product and want to verify its integrity, or for gamers seeking to optimize their competitive setup by detecting latency or accuracy failures.

# Visual Health: Dead Pixel Testing and Repair

A monitor with defective pixels can ruin your user experience. Our pixel test displays pure colors in fullscreen to identify dead pixels (black) or stuck pixels (locked in one color). Plus, we include a stroboscope optimizer designed to unstick subpixels through rapid chromatic frequency changes.

# Input Controllers: Keyboard (Ghosting) and Mouse (Hz)

For typists and FPS gamers, keyboard and mouse are vital. The ghosting test verifies how many keys your keyboard can register simultaneously (Rollover), while our Polling Rate tool measures your mouse's Hertz (Hz) in real time, ensuring stable and high-speed connection to your PC.

# Gaming and Consoles: Joy-Con Drift and Trigger Testing

Joystick wear (known as drift) is the most common failure in modern PS5, Xbox, and Switch controllers. Our controller simulator analyzes X/Y axes with floating-point precision, letting you visualize any unwanted movement or lack of dead zone in your sticks. It also lets you test haptic response and Dual-Rumble motor vibration through your browser.

# Power and Audio: Battery Health and Pure Tones

Lithium batteries degrade with each charge cycle. Our battery health estimator analyzes current cycles and residual capacity to predict how much useful life remains in your laptop or mobile device. On the other hand, our tone generator allows you to audit speakers and headphones by sweeping frequencies from 20Hz to 20kHz, detecting distortion or hearing loss in high ranges.

# Chromatic Calibration and Color Spaces: Professional Visual Precision

Monitors degrade. Factory color temperature (Kelvin), typically 6500K = D65 Daylight, changes over time. For graphic designers, photographers, and editors, this is catastrophic: you edit colors on a miscalibrated monitor, the work looks different on other displays, and the client rejects it. Deep calibration requires hardware (colorimeter costing €300-1000), but our color space test at least lets you audit whether your monitor maintains consistent gamma range (typically 2.2).Understanding sRGB vs. Adobe RGB vs. P3 is critical too. sRGB is web standard (sufficient for 99% usage), but Adobe RGB covers 40% more colors (necessary for professionals). A monitor covering only 70% sRGB will produce insufficient color saturation. Our tools let you audit without investing €1000 in professional equipment.

# Hardware Performance: Benchmarking and Bottleneck Detection

Gamers speak of "bottleneck" when GPU and CPU are unbalanced. A powerful GPU fed by a weak CPU never reaches its potential. The concept is simple: if the GPU waits for the CPU to finish, it's waste. Testing tools help diagnose: Is my problem the GPU or CPU? Do I need an upgrade? Or just reduce video settings?Latency tests are also critical for competitive gaming. Input-to-display latency (from pressing a button to seeing it on screen) can be 20-50ms on a decent setup, but 200+ms on a slow one. In competitive games (FPS, fighting games), 50ms is the difference between victory and defeat. That's why pro gamers invest in 240Hz monitors, 8000Hz mice, and optimized PCs.

# Lifecycle and Repairability: Digital Rights

"Repairability" is increasingly important in 2026. A "repairable" phone lasts 6 years; a "sealed" one expires in 2-3 years. A laptop with upgradeable RAM is an investment; one with soldered RAM is disposable. The diagnostic tools we implement align with the Right to Repair movement: we want you to know exactly what's broken before you discard your devices.Documenting the failure with our tools (screenshot of failed pixel test, video of drifting controller) is evidence for warranty claims. Many users lose money because they don't document, don't diagnose, just give up and buy new. Our utilities democratize technical information: now you can argue with proof.

# The Future of Wearable Hardware 2026

In 2026, the line between operating system and browser has blurred. Thanks to standards like Web Serial and WebUSB, we can perform diagnostics that previously required specific drivers. These tools are part of a movement toward the right to repair and user technical sovereignty over their own devices.