Crop your webcam to 4:3
Use your webcam's native 4:3 frame with a live browser tool. Crop, zoom and align, then lock the framing on every call with CamTuner.
4:3 is what your webcam sensor actually sees. Laptop cameras and most external webcams capture a squarish 4:3 frame before any app reshapes it — the fullest, least-distorted picture your camera can produce.
Keeping 4:3 is useful when you control the canvas: recordings you'll reframe later, streaming layouts with room beside you, or calls on platforms that display 4:3 feeds without padding.
See yourself in 4:3
Start your camera and this preview applies the crop live. Nothing is recorded or uploaded.
Controls
Happy with the framing? The CamTuner extension keeps it on every call — this page only previews it.
When to frame 4:3
- Recording footage you plan to reframe or edit into other shapes later
- Stream layouts with overlays or side panels where a taller frame fits
- Calls on platforms that render 4:3 feeds natively without letterboxing
Framing tips for 4:3
- 4:3 is the tallest shape that doesn't require cropping your sensor — good when headroom matters
- On 16:9 call platforms, a 4:3 feed turns into bars — that's where the 16:9 preset is the better choice
- Try aligning yourself slightly off-center; a 4:3 frame leaves comfortable room for picture-in-picture overlays
4:3 webcam FAQ
Isn't my webcam already 4:3?
The raw capture is, but call apps and streaming software often crop or letterbox it before anyone sees it. Locking 4:3 in CamTuner keeps the native shape explicit and under your control.
Why do I see bars when I use 4:3 on calls?
Call tiles are 16:9, so a taller 4:3 feed gets padded with bars on the sides. If you mostly join calls, use the 16:9 preset; keep 4:3 for recording and layouts where you control the canvas.
Other shapes
The extension applies your crop automatically in Meet, Zoom and everywhere else. Free, no account, on-device.