Free Online Tools to Test Your Mic, Webcam, Speaker and More

Most people only find out their microphone or webcam is broken when they are already in a meeting. MicCheck Online is a free browser-based tool that lets you test all your devices in seconds — no download, no account, no cost.

Here is every tool available and how to use each one.

Microphone and Audio

Mic Test

https://miccheckonline.com/mic-test

Open the link, click Allow, and speak into your microphone. You will see a live audio level bar moving in real time. If the bar moves, your mic is working. If nothing happens, there is a permission or hardware issue to fix. Also shows clipping warnings when your mic volume is too high.

Speaker Test

https://miccheckonline.com/speaker-test

Plays tones through your left and right speakers separately. The fastest way to confirm both channels are working and your stereo balance is correct. Useful after driver updates or when one side sounds quieter than the other.

Headphone Test

https://miccheckonline.com/headphone-test

Tests each ear independently using stereo tones. Good for catching a blown driver, uneven balance, or audio cutting out in one ear.

OBS Mic Test

https://miccheckonline.com/obs-mic-test

Specifically for streamers and content creators using OBS Studio. Check mic levels and detect clipping before going live or recording.

Camera and Video

Webcam Test

https://miccheckonline.com/webcam-test

Shows a live video preview with your camera resolution, FPS, and aspect ratio. Works with built-in webcams, USB cameras, and virtual cameras. Perfect before job interviews, online classes, or video calls.

Camera Resolution Test

https://miccheckonline.com/camera-resolution-test

Shows your webcam exact width, height, aspect ratio, and live frame rate. Useful for confirming your camera is delivering the resolution it claims.

Webcam FPS Test

https://miccheckonline.com/webcam-fps-test

Real-time FPS counter with min, max, and average stats plus a live FPS history graph. Helpful for streamers who need to confirm their camera is running at a smooth frame rate.

Video Call Tests

Zoom Test

https://miccheckonline.com/zoom-test

Full pre-call checklist for Zoom. Test mic and camera together, get audio and video settings guidance, and see fixes for the most common Zoom problems before your meeting starts.

Google Meet Test

https://miccheckonline.com/meet-test

Verify mic and camera before a Google Meet call. Covers black screen fix, permission errors, settings guide, and common Meet FAQs.

Microsoft Teams Test

https://miccheckonline.com/teams-test

Test mic, webcam, and speaker before a Teams meeting. Covers Teams-specific audio and video troubleshooting in one place.

Keyboard and Mouse

Keyboard Test

https://miccheckonline.com/keyboard-test

Press any key and watch it light up on a visual QWERTY layout in real time. Detects stuck keys, missing key registration, and multi-key rollover issues. Works on laptop and external keyboards.

Mouse Test

https://miccheckonline.com/mouse-test

Tests all mouse buttons, scroll wheel, and cursor tracking. The best way to confirm a double-click issue or identify a stuck or unresponsive button.

Screen and Monitor Tests

Dead Pixel Test

https://miccheckonline.com/screen/colors

Full-screen color test with 8 colors. Cycle through red, green, blue, white, black, yellow, cyan, and magenta to spot dead pixels, stuck pixels, backlight bleed, and color uniformity issues. Keyboard shortcuts included for quick switching.

White Screen Test

https://miccheckonline.com/screen/white

Bright white full-screen display. Best for spotting dead pixels and also works as a soft lighting source for Zoom and Meet calls.

Black Screen Test

https://miccheckonline.com/screen/black

Pure black full-screen display to detect backlight bleed, IPS glow, and OLED uniformity issues.

Red Screen Test

https://miccheckonline.com/screen/red

Detects stuck red pixels and verifies red color channel accuracy.

Green Screen Test

https://miccheckonline.com/screen/green

Spots stuck green sub-pixels and checks green channel accuracy.

Blue Screen Test

https://miccheckonline.com/screen/blue

Detects stuck blue pixels and checks blue color channel calibration.

Yellow Screen Test

https://miccheckonline.com/screen/yellow

Detects stuck blue sub-pixels and verifies red and green channel accuracy.

Cyan Screen Test

https://miccheckonline.com/screen/cyan

Detects stuck red sub-pixels and verifies green and blue channel accuracy.

Magenta Screen Test

https://miccheckonline.com/screen/magenta

Detects stuck green sub-pixels and verifies red and blue channel accuracy.

Screen Uniformity Test

https://miccheckonline.com/screen/uniformity

Checkerboard pattern test to detect color banding, uneven brightness, and display inconsistencies across your monitor.

Zoom Lighting Tool

https://miccheckonline.com/screen/lighting

Turns your monitor into a soft light source for video calls. Adjustable brightness slider — no ring light needed.

Other Pages

Browser Permission Check

https://miccheckonline.com/browser-permission-check

Diagnoses exactly why your microphone or camera is blocked in the browser and gives step-by-step instructions to fix it.

FAQ

https://miccheckonline.com/faq

Answers to the most common questions about mic, webcam, speaker, and audio testing.

Blog

https://miccheckonline.com/blog

Everything on MicCheck Online is completely free. No download, no account, no data collected. Works on Chrome, Firefox, Edge, and Safari on Windows, Mac, Linux, and mobile.

Visit https://miccheckonline.com to get started.