About this tool

Preview your webcam feed directly in the browser with live resolution and frame rate readouts, switch between multiple connected cameras, and record a 30-second clip to play back and check focus, lighting, and motion smoothness.

Camera access uses navigator.mediaDevices.getUserMedia with device switching via enumerateDevices, and reported resolution comes straight from track.getSettings(). Frame rate is measured, not just read from the device's claimed spec, using the video element's requestVideoFrameCallback API to count actually-delivered frames — a more honest number than a track setting that may not reflect real conditions. Recording uses the MediaRecorder API to capture a WebM clip for immediate local playback.

Key features

• Live resolution and measured (not just claimed) frame rate via requestVideoFrameCallback
• Device switching for setups with multiple connected cameras
• 30-second local recording and instant playback via the MediaRecorder API
• Real device name display sourced from MediaDevices track settings

Why use it

• See your true delivered frame rate, including drops under low light — not just a spec number
• Check focus and lighting before a call, with an actual recorded playback to review
• Confirm the correct camera is selected when multiple devices are connected

Why webcam tester testing matters

The first sign of webcam trouble is usually someone else telling you your video looks blurry, dark, or choppy — by then it's already happened live. A quick self-check beforehand catches focus issues, poor lighting, and framerate drops while you can still fix them.

Tips for accurate results

• Check focus by holding a printed page of small text in frame — a healthy autofocus webcam should sharpen within a second or two.
• Test in your actual call lighting setup, not just bright daylight — many webcams struggle specifically in dim, mixed, or backlit conditions.
• Watch the reported frame rate during motion (wave a hand) rather than while sitting still, since some webcams drop frames adaptively under low light.
• If the picture looks softer than expected, clean the lens — it's a surprisingly common and instantly fixable cause.

Frequently asked questions