Hardware & Media Diagnostics Lab
Test your audio, video, input devices, display panel, network latency, battery health, and USB ports directly in your browser. Fast, accurate, and 100% private with zero server telemetry.
Browser Hardware Subsystem Ready
Auditing browser
capabilities (MediaDevices, Web Audio, Gamepad, WebUSB)...
Core Media Diagnostics
Microphone Test
Live decibel meter, audio waveform, clipping detector, and 5-second voice
playback loop.
Webcam Test
Real-time camera feed preview, frame rate (FPS), sensor resolution, and test
snapshot capture.
Speakers & Headphones
Isolated Left and Right channel stereo test, driver phase check, and
20Hz–20kHz frequency sweeps.
FPS Analyzer
High-precision frame delivery analysis, frame drop monitoring, and temporal
stability graph.
Input & Display Diagnostics
Keyboard Test
Interactive virtual keyboard layout with n-key rollover, ghosting detection,
and stuck key audit.
Mouse & Click Test
Verify Left, Middle, Right microswitches, double-click debounce chatter, and
scroll wheel encoder.
Screen & Dead Pixel Test
Full-screen primary color swatches (Red, Green, Blue, White, Black) for stuck
pixels and IPS backlight bleed.
Resolution Matrix
Automatic probe scanning across 4K, 2K, 1080p, 720p, and SD sensor modes.
Extended Hardware Diagnostics
Gamepad Controller Test
W3C Gamepad API polling for Xbox, PlayStation, and generic USB controllers
with stick drift and rumble checks.
Touchscreen & Multi-Touch
Interactive canvas digitizer supporting up to 10 simultaneous contact points
and pinch gestures.
Network & Ping Test
Real-time latency, packet jitter, and stability metrics for Zoom, Teams, and
gaming.
Battery Health Test
Laptop battery charge level, AC adapter charging state, and power management
telemetry.
USB Port & Device Test
Query USB host controller handshakes, device descriptors, and port
connectivity via WebUSB.
Specialized Media & Camera Utilities
Webcam Video Recorder
Record webcam video with synchronized microphone audio, automatic codec
detection (VP9/VP8/H.264), and local download.
Webcam Photo Studio
Take professional snapshots with live filters (Brightness, Contrast,
Grayscale, Sepia), countdown shutter, and filmstrip gallery.
Greeting Cards Studio
Place your live camera face into artistic festive greeting card frames
(Holidays, Valentine, Celebrations) with real-time blending.
Camera Smart Mirror
Reflective vanity mirror with Flip X/Y, 90° rotation, face illumination,
zoom, and distraction-free fullscreen mode.
Full-Bleed Camera Viewer
Clean, distraction-free edge-to-edge camera viewport for framing,
composition, and presentation.
Audio Recorder Studio
High-fidelity browser voice recorder with real-time waveform visualizer,
duration timer, and instant audio download.
Hardware Troubleshooting Guide
Step-by-step technical fixes for webcam black screen, mic echo, low volume,
144Hz lock, and mouse chatter.
Extended Mini Tools & Hardware Benchmarks
Monitor Refresh Rate & Ghosting
Accurately test screen Hz (60Hz, 120Hz, 144Hz, 240Hz), detect frame drops,
and inspect pixel ghosting.
HDR & Color Gamut Checker
Check High Dynamic Range (HDR) capability, DCI-P3 wide color gamut, and
10-bit color depth.
Screen PPI & DPI Calculator
Calculate display pixel density (PPI), dot pitch, and optimal retina viewing
distance.
WebGL 3D GPU Benchmark
Real-time 3D shader stress test to benchmark graphics card throughput and
measure stable FPS.
Hearing Frequency Range Test
Test high and low pitch hearing frequency thresholds from 20Hz up to
20,000Hz.
3D Spatial & Surround Sound
Experience 360-degree binaural spatial audio for headphone gaming and
positional soundstage.
Mic Noise Floor & dB Meter
Measure real-time background noise levels (decibels RMS) and inspect acoustic
frequency bars.
Audio Tone & Noise Generator
Synthesize pure sine waves (1Hz-20kHz) and pink, white, brown noise for
speaker calibration.
Mouse Polling Rate & DPI Tester
Measure gaming mouse report rate (125Hz-8000Hz) and test physical DPI
tracking precision.
Keyboard Latency & NKRO Test
Test simultaneous multi-key presses (NKRO / anti-ghosting) and measure input
response latency.
Web Bluetooth Device Scanner
Discover, pair, and test wireless Bluetooth Low Energy (BLE) peripherals from
your browser.
Device Orientation & Gyroscope
Inspect 3-axis angular tilt (Alpha, Beta, Gamma) and accelerometer motion on
mobile and tablets.
WebRTC IP Leak Detector
Check whether WebRTC queries expose your real public or local network (LAN)
IP through VPNs.
Packet Loss & Jitter Tester
Transmit latency probe bursts to calculate packet drop percentages and jitter
for gaming.
DNS & IPv6 Connectivity Test
Verify native IPv6 routing, measure DNS lookup response time, and detect
HTTP/3 support.
CPU Multi-Core Stress Benchmark
Run intensive parallel Web Workers across all logical cores to evaluate
multi-threaded stability.
Browser RAM & Memory Stress
Stress-test memory allocation limits and measure contiguous memory write/read
bandwidth.
In-Browser Screen Recorder
Record screen, window, or tab with computer and microphone audio. Free with
zero watermarks.
Webcam Background Blur & Bokeh
Preview real-time background blur effects and check camera framing,
resolution, and lighting.
Screen Eyedropper & Color Picker
Sample any pixel color from your screen using EyeDropper API and copy HEX,
RGB, or HSL codes.
Architectural Principles & Privacy Guarantee
HWCheck operates entirely within the sandboxed client runtime of your modern web browser. When you grant permission to test your microphone, webcam, gamepad, or USB peripherals, the browser creates a direct hardware interface using WebRTC MediaStreams, the Web Audio API, the W3C Gamepad API, and WebUSB.
Unlike legacy testing utilities that upload video frames or voice samples to cloud servers for remote processing, HWCheck executes 100% of its analysis locally on your CPU and GPU. Your audio signals, camera feeds, keypress logs, and battery metrics never leave your physical machine.
Frequently Asked Questions
Is HWCheck free to use?
Yes. All diagnostic tools on Sharing.io.vn are completely free with no user registration, no software
downloads, and no advertisements placed above the tools.
Are any audio or video recordings stored on your servers?
No. Our platform is architected with strict client-side isolation. Media buffers reside exclusively in
your computer's local memory and are destroyed as soon as you close your browser tab.
Which web browsers are supported?
HWCheck supports all modern desktop and mobile browsers, including Google Chrome, Microsoft Edge, Mozilla
Firefox, Apple Safari, Opera, and Brave.