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Free Device Testers

14 quick checks that run in your browser: controllers, keyboard, mouse, microphone, webcam, speakers and screen. Nothing to install, nothing to sign up for and nothing uploaded.

FreeRuns in your browserNothing uploadedWorks on laptops, desktops and consoles

Controllers

Stick drift, buttons, triggers and rumble on PlayStation, Xbox and Switch pads.

Gamepad tester Buttons, triggers, stick plots, a three-second drift test, circularity and rumble. Works with PlayStation, Xbox and Switch pads. Open the gamepad tester → Stick drift test A hands-off three-second measurement of both sticks with a clear verdict, on PlayStation, Xbox and Switch pads. Open the stick drift test → PS5 controller test Written for the DualSense and DualSense Edge. Buttons, sticks, drift, triggers and vibration. Open the ps5 controller test → Xbox controller test Written for Xbox Series, One and Elite Series 2 pads. Buttons, bumpers, drift, triggers and vibration. Open the xbox controller test → Joy-Con drift test Pair a Joy-Con or Pro Controller over Bluetooth and measure the stick at rest. Written for Switch owners. Open the joy-con drift test → Controller vibration test Fires both rumble motors on demand and tells you when the browser, not the pad, is the reason nothing moved. Open the controller vibration test →

Keyboard and mouse

Dead keys, ghosting, double clicks, scroll and click speed.

Keyboard tester ISO UK and ANSI layouts, keys stay marked once pressed, held-key counter for rollover and ghosting, stuck-key detection and a key history. Open the keyboard tester → Mouse tester Five button pads, a double-click fault detector, scroll skip detection, a five-second CPS test, polling rate and cursor readout. Open the mouse tester → Click speed test Timed click zone for mouse, touch or the space bar, live CPS, a result card with your best score kept on this device and a double-click fault warning. Open the click speed test →

Microphone, camera and sound

Laptop mic, webcam, speakers and headphones.

Speaker and headphone test Left, right and both channels, bass, mid and treble tones, a 20 Hz to 16 kHz sweep, a volume control with a headphone warning and a left right identification quiz. Open the speaker and headphone test → Microphone test Live waveform and level meter with peak hold, a noise floor estimate, five-second record and play back, and a plain verdict on whether the mic is healthy. Open the microphone test → Webcam test Live preview with a mirror toggle, camera picker, actual resolution and frame rate, a dark-frame cover check and a snapshot you can download. Open the webcam test →

Screen

Dead pixels, refresh rate, touch, colour banding and backlight bleed.

Dead pixel test Full-screen white, black, red, green, blue and grey, tap or key to advance, plus a stuck-pixel flasher you can park over the fault. Open the dead pixel test → Screen test Refresh rate estimate, multi-touch paint and dead zone grid, greyscale and RGB banding ramps, a black screen for backlight bleed and grey and white for uniformity. Open the screen test →

Why we built them

We spend every day fixing the faults these tools find: drifting sticks, dead keys, bouncing mouse switches and failing panels. Testing first means you know what you are dealing with before you bring it in, and we can quote the right fix straight away instead of starting from a vague description.

Each page explains how to run the test, what the result means and whether it is a settings issue, a cleaning job or a repair. Where it is a repair, the page links to the service and the price it starts from. If it is not, it says so.

The testers use standard browser features, so there is nothing to download. Your keystrokes, clicks and controller data never leave your device.

Console & controller repairPS5, Xbox, Switch, Steam Deck, ROG Ally and every controller. Drop off 24/7 or post it in.→ Laptop, Mac & PC repairScreens, keyboards, batteries, ports, data recovery and diagnostics at Kings Cross.→ Book a free diagnosisExact quote before any work starts. No Fix No Fee.→

Free tools: your questions answered

Are the testers really free?−

Yes. There is no sign-up, no download and no charge. They run in the page you are looking at.

Is any of my data uploaded?+

No. Each tester uses browser features such as the Gamepad API and keyboard events. Everything stays on your device and nothing is sent to us.

Which browser should I use?+

Chrome or Edge on a laptop or desktop gives the fullest results, particularly for controllers and vibration. Firefox and Safari work for the keyboard, mouse and screen tests.

What happens if a test finds a fault?+

Each page explains what the result means and whether it is a settings issue, a cleaning job or a repair. If it is a repair, the page links to the right service with the price it starts from.

Found a fault?
Free diagnosis and an exact quote before any work, open 24/7 at Kings Cross.

Book a free diagnosis Call 0800 955 0071