Webcam Test & Camera Resolution Diagnostic Online Free
One click starts your camera for a private hardware diagnostic: live preview, track label, negotiated width × height, frame rate and facing mode. Switch front/back cameras on phones, capture a still PNG (mirrored for front cameras), and stop tracks when finished. Ideal before video calls, streaming setup or buying a used laptop camera. Frames stay in the browser — no server sees your feed.
Webcam Test & Camera Resolution Diagnostic In-Browser Workspace
Input data or select files to begin. 100% private, client-side execution with zero server transmission.
How to Use Webcam Test & Camera Resolution Diagnostic
- Step 1: Open the page over HTTPS or localhost and click Start Webcam.
- Step 2: Allow camera permission when the browser prompts.
- Step 3: Read resolution, FPS, facing mode and device label on the HUD overlay.
- Step 4: Optional: switch Front/Back, then Capture Photo to grab a PNG.
- Step 5: Download the snapshot if needed, then press Stop to release the camera.
About Webcam Test & Camera Resolution Diagnostic
The tool calls navigator.mediaDevices.getUserMedia with ideal 1920×1080 video constraints; the browser and driver negotiate actual trackSettings() width, height, frameRate and facingMode shown on the HUD overlay. A video element plays the MediaStream locally with muted autoplay and playsInline so mobile browsers accept the feed. Capture draws the current frame onto an offscreen canvas — front cameras are horizontally flipped so the still matches a mirror view — then canvas.toDataURL produces a PNG data URL for download. Stopping calls track.stop on every track so the OS privacy indicator clears; unmount cleanup does the same if you navigate away. getUserMedia requires a secure context such as HTTPS or localhost, and permission denials surface with actionable copy. Nothing is encoded for upload — there is no network hop for video frames. Frame rate can dip if the tab is throttled or the driver is busy, and resolution may be lower than requested when the webcam cannot meet constraints. Use this before Zoom, Meet or Teams to verify hardware, or after a privacy-clean reinstall to confirm the camera is not blocked at the OS or firmware level. Diagnostics stay entirely on-device.
Frequently Asked Questions
Why does the browser ask for permission?
getUserMedia requires explicit user consent; deny blocks access until you change site settings.
Why HTTPS?
Browsers expose camera APIs only in secure contexts (HTTPS or localhost) to prevent passive network snooping.
Is my video uploaded?
No — frames render to a local <video> and optional canvas; there is no upload endpoint.
How do I stop the camera light?
Press Stop or leave the page; all tracks are stopped and the privacy indicator should turn off.
No picture — what now?
Check OS privacy toggles, other apps holding the camera, driver updates, and that permission is allowed for this origin.