General Tools
Sound Test
Play left, center, and right test tones to check speaker output and stereo balance from your browser.
Audio Output
Sound Test
Play short tones through the left, center, and right channels to check speaker output and stereo balance.
Status
Ready
How This Test Works
This tool uses browser APIs on your device. Permission-based tests such as microphone and camera only start after you press the button and allow access.
No Install
Open the page in a modern browser and start testing.
Local Only
Media streams and sensor readings stay on your phone or computer.
Clear Results
Use live meters, visual panels, and status messages to spot problems quickly.