Utility Belt
Hardware Calibration
Essential browser-based tools to verify your audiovisual equipment before testing your own biology.
Hz Checker
Estimate browser animation frame rate and frame pacing, not calibrated monitor Hz.
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Mic Test
Test and visualize your microphone input online.
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Tone Generator
Generate browser sine tones at a comfortable volume. Actual output depends on your audio equipment.
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BPM Counter
Tap to measure tempo. Essential for musicians and DJs.
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Dead Pixel Test
Display solid colors to help you spot potentially stuck pixels.
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Stereo Check
Explore left/right headphone playback using comfortable-volume browser tones.
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