WhiteScreenHD began as a single, fast, ad-free white screen for dead-pixel checks. People kept coming back for more — a mic test here, a webcam check there — so we kept building. Today it's a free, browser-based diagnostics suite: eleven color screens plus 20+ tools that check your camera, audio, input devices, sensors, and hardware. Same rule as day one: no installs, no accounts, no clutter.
$ ./whitescreenhd --status
color-screens ....... 11 online
camera / webcam ...... ok
microphone / speaker . ok
keyboard / mouse ..... ok
sensors / hardware ... ok
server round-trips ... 0ms
price ................ $0, forever
$ ▍
11
Color screens online
20+
Browser diagnostic tools
0 ms
Server round-trips to use the tools
$0
Free, forever — no paywall
What we are now
01
Full-screen solid colors for dead-pixel checks, Zoom fill lighting, screen cleaning, and photography backdrops. Eleven presets plus a custom hex picker, with brightness control and downloads up to 4K.
02
20+ browser tools that check the hardware behind the screen — camera, mic, speakers, keyboard, sensors, ports, and specs. Everything runs locally; nothing is uploaded anywhere.
Test suite — 8 channels
CH01
Touch, gyroscope, vibration — no app required.
CH02
Webcam test and mirror before a call or recording.
CH03
Speakers, headphones, mic, and a voice recorder.
CH04
Click by click response for every input device.
CH05
CPU, GPU, RAM, and refresh rate — no install.
CH06
See what your browser is running and can access.
CH07
USB ports and Bluetooth, confirmed working.
CH08
Blank image generator and a stylish text tool.
How we build
Instant by default
Every tool should load before you notice it loading. Fast page loads are a requirement, not a goal.
Runs on your device, not our servers
Camera, mic, and sensor tools process everything locally in your browser. Nothing is uploaded, ever.
Clean interface, always
Ads live below the tool, in the content area — never overlaid on a screen or test, never interstitial.
Free, forever
No paid tier, no premium plan, no feature locked behind a subscription. Every tool, every download.
We use Google Analytics and AdSense, and say so plainly. Diagnostic tools that touch your camera, mic, or sensors run entirely client-side — that data never reaches our servers.
Read the privacy policy →Get in touch
Have a feature request? Found a bug? Want to suggest a new color or screen type? We genuinely read every message and prioritize feedback from real users when deciding what to build next.
