Your files stay on your device

Device tests

Check your webcam, microphone, speakers, keyboard, and screen before a call or after a repair. The browser asks for permission only when you press a test button.

19 tools

Quick checks

- Webcam test

See your camera picture, check its resolution, and switch cameras.
 (/device/webcam)
- Microphone test

Speak and watch the level meter move. Nothing is recorded.
 (/device/microphone)
- Speaker test

Play a tone in the left, right, or both speakers to check they work.
 (/device/speakers)
- Keyboard test

Press any key and see it light up, so you know which keys work.
 (/device/keyboard)
- Dead pixel test

Fill the screen with solid colors to spot dead or stuck pixels.
 (/device/dead-pixel)
- Screen recorder

Record your screen, a window, or a browser tab and save the video.
 (/device/screen-recorder)

Screen and input

- Refresh rate test

Measure how many times a second your screen refreshes.
 (/device/refresh-rate)
- Touch test

Touch the screen with one or more fingers to check that touch works everywhere.
 (/device/touch)
- Gamepad test

Press buttons and move the sticks to check a game controller.
 (/device/gamepad)
- Motion and orientation

See live readings from your phone's motion and tilt sensors.
 (/device/motion)
- Vibration test

Check whether your phone can vibrate from a web page.
 (/device/vibration)
- MIDI monitor

Connect a MIDI keyboard or controller and watch the notes come in.
 (/device/midi)

Browser features

- Battery test

See your battery level and whether it is charging.
 (/device/battery)
- Storage inspector

See what this site has saved in your browser.
 (/device/storage)
- Permissions viewer

See which permissions this site has, like camera or location.
 (/device/permissions)
- Notification test

Check that browser notifications reach you.
 (/device/notifications)
- Clipboard write test

Check that copying to the clipboard works in this browser.
 (/device/clipboard)
- Codec matrix

See which video and audio formats this browser can play and record.
 (/device/codec-matrix)
- WebRTC loopback

Check that video-call connections work in this browser, without a server.
 (/device/webrtc)

Your files are processed on your device. The few tools that talk to the internet say so before they do.

Canonical HTML: https://nutter.tools/device/
Markdown version: https://nutter.tools/device/index.md
Plain-text version: https://nutter.tools/device/index.txt
Agent index: https://nutter.tools/llms.txt