DeviceDIYOpen the speaker test, set a comfortable volume, play a test tone and confirm what you hear. For a left/right channel check, use headphones or speakers with clear stereo placement and confirm each side manually.
Start with the symptom, not a guess
A speaker test needs two parts: the browser produces sound and a human confirms hearing it. A webpage cannot reliably measure whether sound came out of your physical speaker without another measurement device.
Use the free DeviceDIY tool to observe what reaches your browser. Compare the result with another application when necessary, and change one setting at a time so you can tell what solved the problem. A browser test offers useful evidence; it is not a substitute for professional hardware diagnostics.
Step-by-step troubleshooting
Start with safe output volume
Set your system and headphone volume to a moderate level. Avoid testing at maximum volume, especially with in-ear headphones.
Play the speaker test tone
Press Play and listen for an audible tone. A visual button state does not prove sound was produced; you must confirm hearing it.
Check left and right channels
Use the left and right controls. Headphones are often the easiest way to identify channels; some devices, sound enhancements or mono-audio accessibility settings may combine channels.
Choose the intended output
Check your operating system’s sound output. Bluetooth headphones, HDMI monitors and USB docks may become the default output unexpectedly.
Check page and system mute controls
Verify the browser tab is not muted, the system volume is not zero, and external speakers are powered and connected.
Compare a different audio source
Play known audio in another application. If every program is silent, investigate output configuration and connections; if only one website is silent, check tab and site settings.
What your test results actually mean
Both channels audible separately
Basic stereo playback is reaching the output you hear. This is not a frequency-response or speaker-quality measurement.
Both signals seem centred
Mono audio, downmixing, output configuration or headphone placement may be combining channels.
Only one side audible
Check balance settings, cable, earcup connection or one faulty speaker; swap headphones to narrow the cause.
No sound
The browser may generate a tone while the output is muted, routed elsewhere or disconnected.
What an online test cannot prove
Web pages are limited to the information exposed by the browser, operating system and your permission choices. DeviceDIY cannot directly inspect internal circuits or guarantee that hardware will perform correctly in another application. Some tests require you to look, listen or touch the device and confirm what happened.
Privacy and safety: Only grant camera or microphone permission when you intend to use that test. Avoid excessive sound volume, never force a faulty connector and follow the manufacturer’s safety guidance before attempting physical repairs.
Frequently asked questions
Why does sound play through my monitor rather than my headphones?
The operating system may have selected an HDMI/DisplayPort or dock output. Change the active output in system sound settings.
Can an online website identify a damaged speaker?
It can produce test signals, but listening and sometimes specialised equipment are required to identify distortion or damage.
Why do left and right tests sound identical?
Mono-audio accessibility features, virtual surround tools, mixing or incorrectly configured channels can make both sound the same.
Official references and further reading
For system permissions and browser behaviour, use the official documentation below. Menus and controls can vary by device and software version.
Keep troubleshooting
Ready to check your device?
Use the free interactive test first, then return to the guide if something fails.