Camera and Microphone Test
Check your webcam and microphone before the meeting: live preview with your camera's real resolution, a supported-resolutions test (480p/720p/1080p), a level meter with peak reading to calibrate your voice, and a speaker test with per-channel tones. All in your browser.
Camera
Preview appears after granting permission
Microphone
If the bar doesn't move while speaking: check the right mic is selected and the system isn't muting it.
Speaker test
Tone on the left (440 Hz) then the right (550 Hz): check both channels.
Built by
Miguel Ángel Colorado Marin (MACM)
Built by
Miguel Ángel Colorado Marin (MACM)
Full-Stack Developer · Guadalajara, España
I develop web apps, digital tools and full projects — from design to deployment.
«Can you hear me? Can you see me?» — the phrase that opens half the world's video calls. This test kills it: camera preview with the actual resolution and fps your hardware delivers (not the advertised ones), a test that forces each standard resolution to find out what your camera really supports, a microphone level meter with peak reading to set the volume right, a picker across every system device, and a speaker test with per-channel tones to catch a broken cable or headset. Everything runs on native browser APIs (getUserMedia, enumerateDevices, AnalyserNode): image and audio are processed on your device with zero uploads — not even a ping.
Features
- ✓Live camera preview with the real sensor resolution and fps
- ✓Resolution test: find out if your camera really delivers 480p, 720p or 1080p
- ✓Device picker across every camera and microphone on the system
- ✓Real-time microphone level meter with peak reading
- ✓Speaker test with separate left (440 Hz) and right (550 Hz) tones
How to test your camera and microphone online?
- 1
Accept the permission
On load the tool already asks for camera and microphone in one dialog: press «Allow». If you cancelled, allow it in the address bar lock and press «Test».
- 2
Check the picture
The preview shows real resolution and fps; press «Test resolutions» to find out how much quality your camera offers.
- 3
Calibrate the microphone
Speak at normal distance: the bar should move at 50-80%. Adjust system volume until the peak stays below 90%.
- 4
Check your speakers
Play the L/R tone: you'll hear the left channel first, then the right, confirming both work.
Frequently asked questions
Why is the real resolution lower than my camera's advertised one?
Because the browser negotiates with the driver and the sensor's active mode: some cameras drop resolution in low light, on USB 2.0 or while another app uses them. The resolution test forces each mode to see what your camera really accepts right now — the number that matters for a call, not the brochure's.
Is anything recorded or uploaded?
No. The preview and the meter live in memory while the tab is open and vanish when you stop the test: no recording, no storage, no network request. Verify it in the dev tools network tab.
Why don't device names show before granting permission?
It's the browser's own privacy protection: the device list exists, but names are only revealed after permission is granted once. The tool asks on load and the names appear in the pickers right away.
Related tools
Embed Camera and Microphone Test on your site
Add Camera and Microphone Test to any web page with a simple iframe. Free, with attribution to miguelacm.es.
<iframe
src="https://miguelacm.es/embed/camera-mic-test"
width="100%"
height="700"
frameborder="0"
title="Camera and Microphone Test — miguelacm.es"
></iframe>