⌨️ Keyboard Test
Press every key — it turns green once tested. Blue = currently held.
Layout:
Tested: 0
Total: 0
0%
Press any key…
📷 Camera Test
Preview your webcam live and inspect device details.
Camera not started
| Status | — |
| Device | — |
| Resolution | — |
| Frame Rate | — |
| Aspect Ratio | — |
| Facing Mode | — |
🔊 Sound Test
Full-range audio track to test your speakers — then use the channel tester to check left and right sides independently.
Full Range Speaker Test
Sub · Bass · Mids · Highs — reveals muffle, rattle & distortion
0:00
0:00
80%
Playing through both speakers.
🎙️ Microphone Test
Check your mic is detected and picking up sound — the volume bar and spectrum update live.
🔋 Live Battery Status
Real-time data from your browser.
🩺 Battery Health
Generate the Windows battery report, upload it here, and the site instantly calculates your battery health.
1
Generate the battery report
Open Command Prompt (CMD) as Administrator — press Win + R, type
cmd, then right-click → Run as administrator. Then run:powercfg /batteryreport /output "%USERPROFILE%\Downloads\battery-report.html"
This saves battery-report.html to your Downloads folder (e.g.
C:\Users\YourName\Downloads\).2
Upload the report file
Drop battery-report.html here
or click to browse
💻 More Useful Commands
Run in Command Prompt (CMD) as Administrator — Win + R →
cmd → right-click → Run as administrator.Energy efficiency report (60-second scan, saves to Downloads):
powercfg /energy /output "%USERPROFILE%\Downloads\energy-report.html"
Quick battery level check (%):
wmic PATH Win32_Battery GET EstimatedChargeRemaining
Design capacity in mWh (needs Admin):
wmic /namespace:\\root\wmi PATH BatteryStaticData GET DesignedCapacity
Full charge capacity in mWh (needs Admin):
wmic /namespace:\\root\wmi PATH BatteryFullChargedCapacity GET FullChargedCapacity
🖥️ Display Tester
Test your screen for dead pixels, backlight bleed, colour accuracy, and uniformity. Click a test, then press F or the Fullscreen button to go full screen. Press Esc to exit.
Solid Colour — Dead Pixel & Uniformity
Pattern Tests
100%
💡 What to look for
🟤 Dead Pixels
Use solid red, green, blue, black, white. A stuck pixel stays one colour; a dead pixel stays black.
💡 Backlight Bleed
Pure Black in a dark room. Bright patches or halos around edges = backlight bleed.
🎨 Colour Accuracy
RGB Gradient should flow smoothly with no banding. Distinct steps = limited colour depth.
🔤 Sharpness
Fine text and lines should be crisp. Fuzzy or haloed letters indicate focus or scaling issues.
☀ Gamma / Brightness
Gamma Ramp should show distinct bands from black to white with even spacing.
⊞ Uniformity
Solid gray or white — brightness and colour should look identical in all corners and the centre.