One-Stop Testing for A/V, Network & System
Privacy FirstInstant testing for 16 capabilities: Mic Tester - Online Microphone Test & Record、Webcam Test - Check Camera Resolution & Focus、Video Capability Test - 4K/8K Decoding Performance, and more.
No Install · No Upload · 100% Free
Local First
Most tests run entirely on your device; internet is only used for connectivity checks.
Privacy First
We never upload your audio/video data. Browser permissions can be revoked at any time.
Comprehensive
Currently featuring 16 tools: Mic Tester - Online Microphone Test & Record、Webcam Test - Check Camera Resolution & Focus、Video Capability Test - 4K/8K Decoding Performance, and more.
Most Popular Tools
Mic Tester - Online Microphone Test & Record
Test your microphone online instantly. Check for sound, echo, and static noise. Features real-time waveform visualization and playback. No software download required; 100% private.
Start TestWebcam Test - Check Camera Resolution & Focus
Quickly verify if your webcam is working. Check resolution, focus, and clarity. Supports mirroring and snapshot capture. Essential tool before Zoom/Teams calls.
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Video Capability Test - 4K/8K Decoding Performance
Analyze your browser and device's video decoding performance. Supports 4K/8K playback testing to identify stuttering, dropped frames, artifacts, and A/V sync issues.
Headphone & Speaker Test - Left/Right Stereo Check
Professional audio output test. Accurately check Left/Right stereo balance, bass response, and distortion on headphones and speakers to ensure optimal sound quality.
Network Stability & Latency (Ping) Test
Test your internet connection stability in real-time. Monitor Ping latency, Jitter, and Packet Loss. Quickly diagnose lag in gaming or buffering in videos.
Screen Sharing Test - Browser Capabilities
Simulate an online meeting environment to test browser screen sharing permissions and quality. Verify window sharing, full-screen sharing, and system audio capture.
Online GPS & Geolocation Accuracy Test
Retrieve current device coordinates. Test the accuracy of GPS and IP-based geolocation. View latitude, longitude, altitude, and position update speed.
Mobile Sensor Test - Gyroscope & Accelerometer
Comprehensive check for mobile sensors. Read real-time data from gyroscopes, accelerometers, and orientation sensors to verify motion sensitivity.
Browser Push Notification Test
Test Web Push functionality online. Verify browser and OS notification permissions. Send custom test messages to troubleshoot issues with receiving alerts.
Web Bluetooth Scanner & Connection Test
Use the Web Bluetooth API to scan for nearby devices. Test browser connectivity, pairing, and data transfer capabilities (requires compatible hardware).
Phone Vibration & Haptics Test
Online check for your phone's vibration motor. Offers continuous, pulse, and pattern modes to test haptic feedback strength and responsiveness.
Touch Screen Test - Multi-Touch Detector
Professional touchscreen testing tool. Detect multi-touch points and response speed. Draw lines to identify dead zones, ghost touches, or sensitivity issues.
HDR Display Capability Test
Check if your monitor or mobile screen supports HDR (High Dynamic Range). Visually compare SDR vs. HDR colors and test screen brightness and color depth.
Screen Refresh Rate (Hz) Test
Instantly check your screen's real-time refresh rate (FPS). Verify if 120Hz, 144Hz, or 240Hz high refresh modes are active and check for smooth motion.
Dead Pixel & Light Leakage Test
Use solid colors, gradients, and grids to examine screens for dead pixels, stuck pixels, and backlight bleeding. Essential for checking new monitors and phones.
Ambient Light Sensor (Lux) Test
Read real-time illuminance data (Lux) from your device's light sensor. Test auto-brightness functionality and monitor surrounding light intensity.
Secure, Private, Reliable
All detections are completed locally in your browser: no data upload, no user tracking, no cloud storage. Open and use instantly without installation.