CH 02 · Camera
Webcam Test
Run this webcam test to see the camera’s delivered resolution, measured frame rate, and dropped frames. Allow camera access to start; nothing leaves your device.
A snapshot is saved to your own disk. It is never uploaded.
- Delivered size
- --
- Frame rate, measured
- --fps
- Frame rate, camera says
- --fps
- Camera maximum
- --
- Missed frames
- --
- Dropped by browser
- --
- Frame jitter
- --
- Camera
- --
- How frames are counted
- --
- 480p· Not tried
- 720p· Not tried
- 1080p· Not tried
- 1440p· Not tried
- 4K· Not tried
Asks the camera for 480p up to 4K, one size at a time, and shows what it really delivers. The picture may blink while it runs.
What this webcam test checks
The test asks to use your camera and shows the live picture. It reads the resolution and frame rate delivered by the camera, which can differ from the values shown in its advertised specifications. The frame rate is measured while video frames arrive, rather than copied from a camera label.
The page also tries a resolution ladder from 480p through 4K. It applies each level while the test is running and shows what the camera delivers. The highest level shown as delivered tells you the result of those live tries on your device and in your browser. A level that cannot be delivered may be limited by the camera or the current setup.
How to read the results
Delivered resolution is the width and height of the live camera picture. Higher resolution means more image detail, but the reading alone does not tell you whether the picture looks clear. Check the live view as well.
Measured frame rate is how many video frames arrive over time. A steady reading means frames are arriving at a more even pace. Dropped frames are frames that failed to play; a rising count can match a choppy or interrupted preview.
The maximum resolution is the camera’s reported maximum where the browser can provide that information. It may be unavailable, and it is different from the resolution the test actually receives. The resolution ladder shows the results of attempts at 480p, 720p, 1080p, 1440p, and 4K. The mirror toggle flips the preview. A snapshot saves a still image to your device.
When a result looks poor
If the preview is blank, the camera may be blocked, unavailable, or in use elsewhere. If the resolution is lower than expected, or the picture stutters, the camera may not be delivering the requested level or frames steadily. These readings describe this live session, so try the test again after checking the camera and its connection.
Use the camera fix guide for next steps if the camera does not start or the results remain poor. The snapshot can help you inspect one frame from the current preview, but it does not measure motion or frame rate.
Try a snapshot and mirror view
Use the mirror toggle if you want the preview flipped horizontally. This changes how the live picture appears, not the measured resolution or frame rate.
Save a snapshot to keep a still picture on your device. It captures the current view and is saved to your disk. Look at it alongside the live preview if you want to compare detail, while remembering that one still image cannot show dropped frames or motion.
Browser support
| Browser | Runs |
|---|---|
| Chrome and Edge on a computer | Yes |
| Firefox on a computer | Yes |
| Safari on a Mac | Yes |
| Safari on iPhone | Yes |
| Safari on iPad | Yes |
| Chrome on Android | Yes |
| Samsung Internet | Yes |
| Browsers inside apps | PartlyMany apps block the camera and mic here: open the page in your browser. |
Source: MDN browser-compat-data 8.1.8 · checked November 6, 2026
Questions
How do I test my webcam?
Open the webcam test and allow camera access when prompted. The page starts a live preview and shows the delivered resolution, measured frame rate, dropped frames, and resolution ladder results.
Does this show my camera’s real resolution?
It shows the resolution delivered to the test, plus the camera’s reported maximum when that information is supported. The advertised resolution can differ from what the camera delivers in this session.
Why is the webcam frame rate lower or uneven?
The reading measures frames arriving during the live test, and the page also counts dropped frames. An uneven preview or rising dropped-frame count means playback is not steady; the reading does not identify a single cause.
What does the resolution ladder do?
It tries 480p, 720p, 1080p, 1440p, and 4K live, then shows what the camera delivers for each attempt. Some levels may not be available in the current setup.
Can I save a webcam photo from this test?
Yes. Use the snapshot control to save a still image to your device. It captures the preview at that moment and does not represent motion or frame rate.
Is this a hearing or health test?
No. This page checks camera output, including picture resolution, frame rate, and dropped frames. It does not assess health.