Test your webcam.

A webcam test does more than confirm a little green light. Running your camera through a proper camera test online free before a job interview, a client call, or a family video chat catches three things at once: whether the browser can even reach the device, what resolution and frame rate it is actually negotiating (not the number on the box), and whether the picture itself is usable — correctly exposed, in focus, and not washed out by a window behind you. Skipping this step is exactly why so many calls start with thirty seconds of “can you see me? can you hear me?” webcamtests.wiki runs entirely in your browser, shows your real feed, and reports the numbers your video app is negotiating with the hardware, so you know before you join the call — not during it.

Why your webcam isn't working (the real reasons, in order of likelihood)

“Webcam not working” is rarely a hardware failure. In order of how often each one is actually the cause:

• Another app is holding the camera exclusively. Zoom, Teams, Skype, Discord, and OBS can each lock a webcam so no other program can open it. If you left a meeting open in the background, or OBS is still running from a stream, your browser will fail silently or show a black frame. Close every other app that could touch the camera, then reload.
• The wrong camera is selected. Laptops with an external USB webcam plugged in often default back to the built-in camera, or vice versa. Check the device dropdown inside the video app itself, not just the OS settings.
• Browser camera permissions are blocked.Click the padlock or camera icon in the address bar, check camera permissions in browser settings, and make sure the site is allowed — not blocked, not set to “ask every time” on a browser that silently defaults to deny. Our camera permission checker walks through each step and tells you exactly where it's stuck.
• A physical privacy shutter is closed.Many laptops and external webcams now ship with a sliding cover. It sounds obvious until you've spent ten minutes debugging a “driver issue” that was a piece of plastic.
• Outdated or conflicting drivers. Less common than people assume, but real — especially after a Windows update. Most USB webcams use the generic UVC driver built into Windows and macOS, so a fresh driver install rarely helps unless the manufacturer ships extra software for pan/zoom or background effects.
• Phone-as-webcam apps competing for the slot. If you use your phone as a webcam (Continuity Camera, DroidCam, Iriun), your computer may see two camera devices with similar names — picking the wrong one is a common, easy-to-miss cause.

Fixing camera not showing in Zoom, Teams, Meet, and Discord

Each app hides the camera picker in a slightly different place, which is why “Zoom camera not showing” and “Teams camera black screen” are two of the most common searches around this topic:

• Zoom: Settings → Video → check the camera dropdown; toggle “Stop Video” on and off if the preview freezes on join.
• Microsoft Teams: Device settings (three dots menu) → Camera; Teams is especially prone to holding the camera hostage after a crashed call — a full app restart, not just leaving the meeting, usually fixes it.
• Google Meet: Click your avatar before joining → check camera permissions in browser settings, since Meet runs entirely through the browser and inherits whatever permission you granted (or denied) the site.
• Discord: User Settings → Voice & Video → Video Settings, and check “automatically determine input device” is pointed at the right camera if you have more than one connected.
• OBS: if OBS is open with a Video Capture Device source active, it locks the camera for every other app until you stop that source or close OBS entirely.

Still stuck after checking all of those? Our camera not working guide walks through the same list step by step with screenshots, and if the camera opens but another app is holding onto it, see what to do when your camera is already in use.

Resolution, frame rate, and aspect ratio, explained without the jargon

A webcam resolution test tells you what your camera is actually delivering, not what the marketing page promised:

• 720p vs 1080p vs 4K — 720p is perfectly fine for most one-on-one video calls; 1080p is the sweet spot for interviews, recorded presentations, and streaming where detail matters; 4K is mostly relevant if you plan to crop or zoom in post-production. Most video call camera check results land at 720p or 1080p because that's what the app requested to save bandwidth, not what your hardware maxes out at.
• 30fps vs 60fps — for talking-head calls, 30fps is indistinguishable from 60fps to almost everyone. Frame rate matters far more for fast motion — gaming streams, demos with quick hand movement — than for a static video call.
• Aspect ratio — 16:9 is the near-universal standard for widescreen video calls and matches most monitors and recording software; anything else usually gets letterboxed or cropped by the receiving app.

If this test reports a lower resolution than your webcam's spec sheet, that's almost always the app requesting a lower default to save CPU and bandwidth — not a hardware limitation. Run the dedicated resolution and FPS test to see the full list of modes your camera actually supports.

Webcam lighting tips that fix most “why do I look bad” complaints

Webcams handle dynamic range far worse than the human eye, which is why a room that looks perfectly bright to you can produce a dark, grainy picture on camera:

• Face a window or lamp — never sit with a bright window behind you, which forces the sensor to expose for the background and leaves your face in shadow (classic backlighting).
• Prefer natural light at an angle in front of you over harsh overhead light, which creates unflattering shadows under the eyes and nose.
• A cheap ring light or desk lamp aimed at your face fixes most low-light graininess instantly — noise almost always comes from the sensor compensating for too little light, not a bad camera.
• Avoid mixing strong warm (lamp) and cool (daylight) light sources in the same shot — it confuses auto white balance and gives skin an odd tint.

Our lighting check tool measures your real-time brightness and contrast and tells you exactly whether you're backlit, too dark, or good to go.

Built-in vs external webcam — when it's actually worth upgrading

Built-in laptop cameras are typically small, fixed-focus sensors optimized for cost, not image quality. An external USB webcam is worth it if you do frequent video calls, interviews, or recordings and want a noticeably sharper, better-exposed image, a wider field of view, or autofocus that keeps you sharp as you move — fixed-focus built-in cameras lock focus at one distance and blur if you lean forward. If your laptop camera passes this test with a clean 1080p/30fps result and good lighting, an upgrade is optional; if it caps out at a blurry 480p with heavy noise even in good light, that's a hardware ceiling no software fix will solve — check our driver directory first, though, since an outdated driver can look identical to a hardware ceiling.

How this camera permissions browser test actually works — and what stays private

This page uses your browser's built-in getUserMedia API to open the camera and read its live feed directly in memory. Nothing is uploaded, recorded, or transmitted to any server at any point — the moment you close this tab, the stream and every measurement it produced are gone. That's also why the site never asks you to sign up, install anything, or grant permissions beyond the standard browser camera prompt: a real check needs your video feed for a few seconds, not your account. Browse our full set of webcam troubleshooting guides for anything this page doesn't cover.