Video Setup Check

Your video and audio are not sent to this website or to anyone else. The picture from your camera is shown in the preview and checked on your own computer. Frames are used only to find your face and measure brightness, and each one is discarded or overwritten by the next. The microphone is used to measure how loud you are. During the voice test only, the six seconds of your voice are also held in your browser's memory so the page can play them back to you. That sound stays on your computer, and it is discarded when you run the test again, stop the camera and microphone, or leave the page.

Nothing is saved to your computer. Everything exists only in your browser's memory while the page is open. Choosing Stop camera and microphone, closing the tab, or leaving the page turns the camera and microphone off and clears it all.

This page saves nothing on your computer: no video, audio, results or settings. It sets no cookies, has no accounts and has no analytics.

Some things are downloaded to your browser. The first time the face detector runs, your browser downloads its program code from the jsDelivr code delivery service and its small face model file from Google's servers. These are downloads to your computer and do not include your video. As with any website, the servers that provide the page and those files can see ordinary visit details such as your internet address and browser type. The page itself is hosted on GitHub Pages.

Voice feedback uses the speech built into your browser. The words spoken are short advice messages made by this page, never your video or audio. Some browsers use online voices, and if yours does, the spoken words may be sent to the voice provider.

You can read the full source code of this page at GarthHum/video-setup-check on GitHub.

Choose the camera or padlock icon in the browser address bar, allow the camera and microphone for this site, then press Start again.

Mac: open System Settings, then Privacy and Security, then Camera and Microphone, and turn on your browser.

Windows: open Settings, then Privacy and security, then Camera and Microphone, and make sure access is on for apps and for your browser.

If the camera is busy, close other apps that may be using it, such as video call apps or recording software.

A small face detector runs on your computer to find your face. Centering, height and distance come from where the face sits in the picture. Facing the camera compares the position of your nose with your eyes, so it measures which way your head is turned, not where your eyes are looking. Lighting compares the brightness of your face with the area behind you, so it works across skin tones. Only very dark or very bright faces are flagged on their own.

The microphone meter and voice test turn off echo cancellation, noise suppression and automatic gain, so the numbers reflect what a recording app would capture. Video call apps often boost a quiet microphone automatically, so this page can read lower than they do. Levels are peak levels in decibels relative to full scale, like the meters in recording software. Zero is the point where the sound distorts, and healthy speech peaks around minus 12. Your average level reads lower than the peaks, usually by 10 decibels or more.

These checks are guides, not rules. If a result looks wrong for your room, trust your ears and your recording.

There are two ways to get advice on your picture. Press Check my picture now, or the C key, and the advice appears as text just below the buttons, with your screen reader moved onto it so it reads it out. Nothing is spoken by the page for this. Or press Start live voice feedback, or the L key, and the page speaks each adjustment as you move, such as "Move a little to your right." If the advice has not been followed, it repeats about every twelve seconds. Stop live voice feedback turns it off again. Live voice feedback is off until you turn it on.

Describe my setup works the same way as Check my picture now: the whole summary of picture and sound appears as text and your screen reader is moved onto it. The voice test works like this too.

On an iPhone or iPad, live voice feedback is read by VoiceOver instead of the browser voice, because Safari on iOS silences the browser voice while the microphone is open. Turn VoiceOver on to hear it. On a computer the live voice is separate from your screen reader, so with a screen reader running you will hear both. If you hear nothing, check that your volume is up.

These keys work anywhere on the page, except while a Camera or Microphone list has focus.

• S starts or stops the camera and microphone.
• C checks your picture now. The advice appears as text and your screen reader is moved onto it. N does the same.
• L turns live voice feedback on or off. M does the same.
• D describes your whole setup, picture and sound, as text.
• V runs the voice test.

Screen readers can capture plain letter keys. VoiceOver on a Mac passes them through unless Quick Nav is on. NVDA and JAWS in browse mode usually keep them for their own navigation, so switch to focus mode, or use the second set: hold Alt and Shift together and press the same letter, for example Alt plus Shift plus C. On a Mac that is Option plus Shift plus C. The buttons at the top of the page always work too, and they sit right after the Start button. Phones and tablets have no keyboard shortcuts, so use the buttons.

Current Chrome, Edge, Firefox and Safari on Mac and Windows. The page must be opened over https or from your own computer for the browser to allow camera access.