Free Online Camera Test - Instantly Check Your Webcam and Mobile Camera Quality
Last reviewed: 2026-09-09
This free camera test checks your webcam or phone camera in the browser - no download, no account. Click Start Camera, allow the permission prompt, and a live preview appears with the negotiated resolution. It captures a single JPEG on your device; nothing is recorded as video or uploaded. Also called a webcam test or front-camera test.
It checks your camera only - front and rear lens, resolution - not the screen (use the LCD test) or the microphone (use the microphone test). See camera test vs webcam test to pick the right check first.
Troubleshooting a "no signal" result
- Browser permission. Click the camera icon in the address bar and re-grant access. On Chrome, Site settings → Camera must be Allow; a blocked permission gives an instant black frame.
- Secure origin (HTTPS). Browsers expose the camera API only over
https://; plain HTTP returns no stream. - OS-level privacy. macOS: System Settings → Privacy & Security → Camera. Windows: Settings → Privacy & security → Camera. Linux: confirm user access to
/dev/video0. - Device in use elsewhere. A blank preview often means another app holds the camera - Zoom, Teams, OBS, or the native Camera app. Quit them and reload.
- Mobile sensor quirks. iOS Safari requires a user tap before the first sensor read. Android Chrome occasionally hides extra rear lenses from the browser, so a lens that returns nothing while the other previews fine means the browser could not open that facing mode.
- External webcam or stale driver. Unplug and reconnect a USB webcam, then update the camera driver; a restart clears a driver still attached to an app that has already closed.
- Physical shutter or BIOS toggle. A sliding privacy cover, or a BIOS camera disable switch on some laptops, gives a solid black frame rather than a permission error - the browser still reports the camera as active. See Camera test shows black screen: 4 fixes for the full diagnostic order.
Desktop vs mobile test differences
| Capability | Desktop browser | Mobile browser |
|---|---|---|
| Live preview | Yes | Yes |
| Resolution readout | Accurate, reflects the first matched MediaTrackConstraint | Accurate, but limited to the OS-reported mode |
| Switch front / rear camera | N/A | Yes, via the camera-select control |
| Frame-rate read | Yes | Varies by browser |
| Permission prompts | Once per site per OS user | Once per tab unless saved |
Reading the controls and the resolution number
A resolution number lower than the camera's spec means another app already holds the high-resolution mode. On a phone the rear lens usually negotiates a higher resolution than the front selfie camera, so a lower number after switching lenses is expected rather than a fault.
Flip mirrors the preview only: Capture writes the raw, un-mirrored sensor frame, so a downloaded photo containing text reads correctly even when the live preview showed it backwards. Download saves that still as a JPEG straight from this page; Edit instead hands it to the full Photo Editor, pre-loaded with your photo, for cropping and adjustments that go beyond a live-preview filter. See webcam mirror vs flip explained for why preview and saved file differ.
Related camera guides and device checks
For a full pre-call check, pair this camera test with the microphone test and the keyboard test.
- Camera test permission blocked: how to allow camera access
- How to check your webcam and microphone before an interview
- Device test checklist for remote work
- Test LCD: Pick the Right Screen-Test Tool
- Camera Check - what people mean and which tool to use
- Front Camera Test
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Free Tool Online Editorial Team
Frequently Asked Questions
The tool shows "no camera detected" - what is the most common cause?
The browser permission is the usual culprit. Chrome, Edge, and Firefox require HTTPS and an explicit Allow click, and if you clicked Block earlier the prompt will not reappear on its own. Click the camera icon in the URL bar (or Site settings → Camera), set it to Allow, and reload the page.
Can I test my phone's front camera with this tool?
Yes. The tool requests the default camera, which on most phones is the front-facing one. If it opens the rear camera instead, use the "Switch camera" control in the tool UI, or reload the page after granting permission - the camera-selection prompt usually appears on the second attempt. iOS Safari and Chrome both support this flow; Android browsers behave the same way.
Camera test shows a black screen?
A solid black frame instead of a live preview is a specific failure - different from a permission error. The guide Camera test shows black screen: 4 fixes covers the four causes in diagnostic order: a physical lens cover or BIOS toggle, a driver conflict, a browser codec restriction, and a second app holding the camera in an exclusive mode. Work through them in sequence - the guide tells you which setting or app to check at each step.
How do I check my camera's resolution with this test?
When the live preview starts, the tool reads the resolution your camera negotiated with the browser and shows it next to the preview as width x height (for example 1280 x 720 or 1920 x 1080). That figure is the actual capture size the browser was given, not the sensor's marketing megapixel rating, so a webcam sold as "2 MP" can still report 1280 x 720. If the reading looks smaller than expected, close any other app holding the camera and reload.
Does this camera test record video, or only take a photo?
It only takes a photo. There is no video-recording button - Capture grabs the single frame showing at that moment and saves it as a JPEG. Nothing is stored as video and nothing leaves the browser tab, so use it to confirm the lens and framing rather than to record a clip.
Why don't the preview filters show up in my downloaded photo?
The filters are preview-only. They are applied to the live video for visual feedback but are not baked into the captured file, so the JPEG you download reflects the raw camera output rather than the filtered view. If you want the effect saved into the image, capture the plain photo here first and then apply the look in a photo editor afterwards.
Can I edit the photo I captured with this camera test?
Yes. After you capture a frame, the Edit button opens the on-site photo editor with that shot already loaded, so you can crop and adjust it without downloading first. The hand-off stays on your device; the frame is not uploaded to any server.
Which browsers does the camera test work in?
It runs in current versions of Chrome, Edge, Firefox, and Safari on both desktop and mobile, because it uses the standard browser camera interface rather than a plugin. There is nothing to install and no extension to enable. If you open it in an older browser that lacks the camera interface, the page shows a short message instead of a live preview so you know the browser, not the camera, is the limit.
Can I use it with a laptop's built-in webcam or an external USB webcam?
Yes. The test opens whatever camera your browser reports as the default, so a built-in laptop webcam and a plugged-in USB webcam both preview here. When several cameras are connected the browser chooses one for you - the front and rear Switch control targets phone lenses, so on a desktop you pick the default camera in your browser or operating-system settings and reload the page to change it.
Is the camera preview mirrored, and does the saved photo come out mirrored too?
By default the preview shows the raw camera image, but the Flip control mirrors it left-to-right the way a bathroom mirror does, which many people find easier to frame against. Unlike the preview Filters, the Flip setting is carried through to the captured frame, so if you turn Flip on and then Capture, the downloaded JPEG is mirrored to match what you saw on screen. Turn Flip off before you capture if you want any text in the shot to read the right way round.
Does this camera test also check my microphone or screen?
No - it tests the camera only. The page opens the camera stream and reports the resolution it negotiated, but it does not read the microphone level or run any display check, so a clean preview here confirms the lens and framing and nothing else. To confirm your mic works, use the microphone test, and to look for dead pixels or backlight problems, use the LCD test - both are linked from this page under the related device checks.
Should I test my camera before a video call, and will this show what a meeting app sees?
Yes. The live preview here is the same feed the browser hands to a video-call app, so if the picture is clear and the resolution reads as expected, the camera is ready for the call. Checking now catches a blocked permission or a lens still held by another app before the meeting starts rather than in front of everyone. Nothing is recorded or uploaded while you test, so it is safe to run right before you join.