Device test
Check microphone level, webcam image and keyboard input separately in this browser.
ready
Processing runs on your device.
Frequently asked questions
Is audio or video recorded?
No. There is only a live level and local preview; no file is created or uploaded.
When does the browser ask for permission?
Only after you explicitly start the microphone or webcam test.
Are camera and microphone stopped afterwards?
Yes. All media tracks close when you stop, when an error occurs and when you leave the page.