Browser-native diagnostics · 09 modules

Know what’s
working.

Check your device. Test your reflexes. Get a clear answer in seconds — right in your browser.

Browse all tests ↓Private by design.
Nothing leaves your device.

SIGNAL CONSOLELIVE / 09

✓READYAll browser systems available

AUDIO

DISPLAY

INPUT

PrivacyLOCAL

SetupZERO

Response< 1 SEC

Test console / 09 modules

Choose your diagnostic.

Device checks and human benchmarks.
Zero setup. Immediate signal.

01Device checkMicrophoneSee your voice move in real time and confirm that your microphone is picking up sound.Test now ↗02Device checkWebcamPreview your camera, check its resolution and make sure the picture looks right before a call.Test now ↗03Device checkSpeakersPlay a clear test tone through both speakers, or check the left and right channels separately.Test now ↗04Device checkKeyboardPress keys and see them light up instantly to spot missing, stuck or unreliable inputs.Test now ↗05Device checkMouseCheck movement, left, right and middle buttons, your scroll wheel and double-clicks in one place.Test now ↗06Device checkScreenFill your display with solid colors to make dead, stuck or unusually bright pixels easier to see.Test now ↗07Device checkRefresh rateEstimate how many times your display updates each second and check frame timing stability.Test now ↗08Human testReaction timeWait for the color change, react as quickly as you can and compare your attempts in milliseconds.Test now ↗09Human testClick speedClick or tap as many times as possible in five seconds and get your clicks-per-second score.Test now ↗

INPUT / 01Select one signal

Open the exact diagnostic you need.

PROCESS / 02Run it locally

Your browser does the work on-device.

OUTPUT / 03Read the result

A clear answer appears immediately.

Privacy architecture

The default setting
is private.

01Your media stays local

Camera and microphone streams are processed only in your browser.

02No identity layer

Every test works without an account, profile or personal history.

03Transparent measurements

Each result explains what a browser test can — and cannot — confirm.