Test Your Camera Online for Free - Check Webcam, Resolution & FPS

Test your webcam with a live preview, resolution, FPS, snapshots, and mirror mode right in the browser.

Runs fully in your browser. No file upload required.Last updated: 2026-03-10

Camera Tester tool interface

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What It Does

Test your webcam with a live preview, resolution, FPS, snapshots, and mirror mode right in the browser.

Nextooly’s Camera Tester lets you quickly verify that your webcam or external camera is working correctly before meetings, calls, or recordings. View a live video preview, check the actual resolution delivered by the camera, and estimate FPS for smoothness.

You can switch between multiple cameras, enable an HD preference, and toggle mirror mode for selfie-style previews. All video is processed locally in your browser via the MediaStream API, with no uploads, no storage, and no server processing.

Example

Input: Your current webcam or external camera after granting browser permission.

Output: A live preview plus detected resolution, FPS, mirror mode, and camera status details.

Best For

People who need to test camera quickly without installing software.
Verify webcam quality before Zoom.
Test an external USB camera.
Confirm HD mode is working.
Capture a quick snapshot.
Not ideal for: locked-down browsers or devices that block the APIs this workflow depends on.

Key Features

Runs entirely in your browser for a private, on-device workflow.
Keeps files and text on your device with no server upload step.
Shows a live preview or immediate result before you move on.
Gives you control over output quality or compression where it matters.
Reports live camera diagnostics such as resolution, frame rate, or mirror mode.
Works with multiple detected inputs or devices when the browser exposes them.

Pricing

Plan type: Free
Price: $0
Limits: Results depend on what the current browser and device are willing to expose through web APIs.

Pros

Keeps sensitive input on your device.
Includes practical controls for common real-world inputs.
Easy to reuse in the rest of your workflow.

Cons

Results can vary based on browser permissions and which web APIs your device exposes.
Advanced automation or team-wide workflows may still need desktop software or APIs.

Alternatives

If Camera Tester is close but not quite the right fit, these related Nextooly tools cover adjacent device & browser workflows without sending you to another service.

Microphone Tester

Best if you need to test your microphone input levels and devices in your browser.

Screen Recorder (Web)

Best if you need to record your screen to WebM video locally.

Browser & Device Info

Best if you need to check your browser name, version, OS, device type, screen resolution, and user agent instantly.

FAQ

Does this camera tester upload my video to any server?

No. Your camera feed never leaves your device. The preview is generated locally using your browser’s MediaStream API. Nothing is recorded, uploaded, stored, or transmitted anywhere.

Why does the tool ask for camera permission?

Browsers require explicit permission before allowing any website to access your camera. This tool only needs permission to show your live preview. If you deny access, the tool cannot detect or start your camera.

What does the 'Prefer HD (720p)' option do?

When enabled, the tool requests an ideal 1280×720 resolution. If your camera cannot provide HD, the tool automatically retries without HD constraints and switches to a supported resolution, ensuring the camera still works.

Why does switching cameras restart the stream?

Selecting a different camera updates the MediaStream constraints. Browsers require re-initializing the stream when switching devices, so the tool restarts the camera with the new device ID.

Why do some cameras appear as 'Camera 1', 'Camera 2', etc.?

If camera permission hasn’t been granted yet, browsers hide the actual device labels for privacy. After allowing access, the tool automatically refreshes the camera list and shows the real names.

I see an error saying 'Camera permission denied'. How do I fix this?

This occurs when you block camera access in your browser popup or site settings. Enable camera permission for this site and refresh the page. Some browsers also require OS-level camera permissions to be enabled.

What does the resolution shown under the preview represent?

It shows the actual resolution being delivered by your camera. The tool reads this using `getVideoTracks()[0].getSettings()` and displays the width × height values in real time.

How does the mirror preview option work?

The mirror toggle simply applies a CSS transform (`scaleX(-1)`) to the video element. This gives a selfie-style mirrored preview, which many users find more natural for webcams.

Last Updated

2026-03-10

Related Resources

Related tools

Related category

Device & Browser

Related comparison/alternatives article

Tool alternatives hub

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What It Does

Test your webcam with a live preview, resolution, FPS, snapshots, and mirror mode right in the browser.

Example

Input: Your current webcam or external camera after granting browser permission.

Output: A live preview plus detected resolution, FPS, mirror mode, and camera status details.

Key Features

Runs entirely in your browser for a private, on-device workflow.

Keeps files and text on your device with no server upload step.

Shows a live preview or immediate result before you move on.

Gives you control over output quality or compression where it matters.

Reports live camera diagnostics such as resolution, frame rate, or mirror mode.

Works with multiple detected inputs or devices when the browser exposes them.

Alternatives

If Camera Tester is close but not quite the right fit, these related Nextooly tools cover adjacent device & browser workflows without sending you to another service.

Microphone Tester

Best if you need to test your microphone input levels and devices in your browser.

Screen Recorder (Web)

Best if you need to record your screen to WebM video locally.

Browser & Device Info

Best if you need to check your browser name, version, OS, device type, screen resolution, and user agent instantly.

FAQ

Does this camera tester upload my video to any server?

No. Your camera feed never leaves your device. The preview is generated locally using your browser’s MediaStream API. Nothing is recorded, uploaded, stored, or transmitted anywhere.

Why does the tool ask for camera permission?

What does the 'Prefer HD (720p)' option do?

Why does switching cameras restart the stream?

Selecting a different camera updates the MediaStream constraints. Browsers require re-initializing the stream when switching devices, so the tool restarts the camera with the new device ID.

Why do some cameras appear as 'Camera 1', 'Camera 2', etc.?

If camera permission hasn’t been granted yet, browsers hide the actual device labels for privacy. After allowing access, the tool automatically refreshes the camera list and shows the real names.

I see an error saying 'Camera permission denied'. How do I fix this?

What does the resolution shown under the preview represent?

It shows the actual resolution being delivered by your camera. The tool reads this using `getVideoTracks()[0].getSettings()` and displays the width × height values in real time.

How does the mirror preview option work?

The mirror toggle simply applies a CSS transform (`scaleX(-1)`) to the video element. This gives a selfie-style mirrored preview, which many users find more natural for webcams.