Verify microphone connectivity, browser audio capture, and relative input amplitude. Screen Tester does not upload captured microphone audio or recordings to its servers. Audio processing and recordings are handled locally in the browser.
Click below to request microphone access. Screen Tester evaluates live PCM audio signal amplitude, waveform shape, and input clipping in local device RAM.
Verify left and right stereo audio channel separation, frequency response, and output balance.
Live camera stream preview, resolution verification, and local private snapshot check.
View detected resolution, color depth, pixel ratio, and HDR capabilities of your display.
