Free Online Diagnostic Tools Library

Select a tool below to begin testing. All diagnostics run instantly in your browser without requiring any software installation.

Device Testing

Test your webcam, microphone, speakers, keyboard and mouse directly in the browser

Test your webcam with live preview, resolution detection, FPS counter, and snapshot capture.

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Test your microphone with real-time audio waveform, volume meter, recording, and playback.

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Test your speakers with left/right channel test, stereo sweep, and frequency tones.

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Test every key on your keyboard with a visual interactive layout and multi-key detection.

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Test all mouse buttons, scroll wheel, and cursor tracking with visual feedback

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Measure and analyze your mouse performance, click speed, accuracy, and polling rate

Test and measure your double-click response time with stats and history

Check Tool ➜

Measure your clicks per second with multiple durations, live graph, and best score tracking.

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Test your mouse scroll wheel with direction detection and event counting

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Challenge your mouse precision by clicking moving targets and tracking hit/miss ratio

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Test drag-click technique with distance, duration, and qualification detection

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Measure your mouse polling rate in Hz with live graph and frequency analysis

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Test your typing speed, keyboard functionality, and key response times

Measure your WPM and accuracy with real-time feedback and multiple passage options

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Measure the time between keydown and keyup events to detect keyboard latency

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Count spacebar presses in unlimited mode or timed challenges with best score tracking

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Identify any key by name, keyCode, code, and modifier state with press history

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