signal desk / Signal Desk
Check your PC gear.
No installation needed.
Free browser tests for keyboard keys, mouse buttons and scroll, monitor dead pixels, microphone, stereo speakers, webcam and gamepad. Find clear instructions, test limitations and troubleshooting help.
- No installation
- No raw input uploads
- At your own pace
Getting the controls ready…Still loading. Check your connection, then reload the page.
See whether keys stick, miss, or respond as you press them.
Keyboard testTake a guided checkup
↗02 / PlayA little break?Seven ways to play with touch, sound and colour
↗03 / Get to know your gearGet to know your gearYour saved observations and checkups
↗Start from a symptom
Pick what you are noticing and we will open the matching test or guide.
Explore the play lounge
Come to check. Stay for a little flow.
Travel ten words further.
Move a train one word at a time. Find a rhythm that feels like you.
Start the journey →A fresh circuit. A little more flow.
Three daily courses. No leaderboard. Just your pace.
— · UTC day · Not a hardware scoreMy desk · Mouse records
Save a mouse test summary to compare it with your next test. It stays in this browser only.
Search all tools
Search by tool name or symptom, or narrow by type.
Getting the controls ready…Still loading. Check your connection, then reload the page.
- Input
Keyboard
See whether keys stick, miss, or respond as you press them.
- Input
Keyboard ghosting
Hold several keys and see how many the browser reports at once.
- Input
Mouse
Check whether buttons, the wheel, and side inputs appear in the browser.
- Input
Mouse double-click
Watch click intervals when you press the same button quickly.
- Input
Mouse wheel
Observe up/down wheel events, reversals, and gap patterns.
- Display
Screen
Step through color patterns to look for blotches or dead pixels.
- Display
Monitor patterns
Inspect gray steps, gradients, contrast, grids, and related patterns.
- Display
Refresh estimate
After Start, estimate Hz from browser frame timing.
- Display
Monitor backlight
Use dark patterns to visually check edge glow or uneven lighting.
- Audio
Microphone
Speak and watch whether the input level moves.
- Audio
Speaker
Check whether a low tone plays on the left and right.
- Audio
Headphones
Check left, right, center, and short spot tones at a low level.
- Camera
Webcam
Check whether the preview appears and looks focused.
- Game
Gamepad
Check whether buttons and sticks respond on screen.
- Game
Controller drift
Calibrate neutral with hands off, then watch how far the sticks move.
- Print
Printer
Use browser print to check color blocks, grids, text, and margins.
- Input
Touchscreen
See active pointer count and trails when you touch the surface.
- System
Device & browser info
Collect viewport, screen size, DPR, and other values the browser already exposes.
Scenario checkups
Run only the tools that fit common jobs—used PCs, video calls, gaming, or a new monitor—in a short guided order.
Used PC checkup
Walk through keyboard, mouse, display, audio, and camera in order.
Video-call checkup
Confirm speak, hear, and preview work in the browser before joining.
Gaming input checkup
Quickly review inputs and a browser refresh estimate before you play.
New monitor checkup
After connecting a new monitor, step through patterns, bleed checks, and refresh observation.
How to use it
Pick a tool and watch the on-screen response. Your input, camera, and microphone data are not sent elsewhere.
How results are labeled
We keep confirmed, self-checked, unsupported, permission-denied, skipped, and error distinct. No overall health score.