Crop to Circle: Why Yours Has a White Box

Round images are everywhere in modern interfaces — avatars, team pages, circular logo badges. Most of the time a platform does it for you by masking a square. Sometimes you need the actual round image as a file.

Crop to Circle produces one, with the area outside the circle genuinely transparent.

The mistake that ruins it

The tool hands you a PNG with genuinely transparent corners — that part is taken care of. The risk is what happens next: convert that circle to JPG anywhere downstream and it stops being a circle.

JPG has no alpha channel. It cannot store transparency. So the transparent corners get filled in — usually white — and you get a circle sitting on a white square. On a white page you might not notice. On any coloured background, it looks broken. This bites people who run the PNG through a converter to save space, or upload it somewhere that flattens to JPG on the way in.

Keep a circular crop as PNG. If something has already flattened one to JPG, converting back with JPG to PNG won't restore the transparency — those corner pixels are opaque white now, and PNG will faithfully preserve them as opaque white. You'd need to re-crop from the original.

WebP is a valid alternative if your destination accepts it — PNG to WebP keeps full transparency at a smaller size. For maximum compatibility, PNG remains the safe choice.

Framing a round crop

Circles crop more aggressively than squares — the corners are gone, so anything near an edge disappears. Centre your subject and leave generous margin. A face that fits a square crop perfectly can lose the top of its head to a circle.

If you want the subject cut out rather than a circular slice of the photo, that's a different job: Remove Background isolates the subject itself and keeps its actual outline.

When you don't need this at all

Worth saying: if you're uploading a profile picture to a platform that displays avatars as circles, upload a square. The platform applies its own circular mask, and a pre-cropped circle on a transparent background can end up double-masked or sitting on an unexpected colour. Use Crop to Square and let the platform do the rounding.

Reach for a real circular crop when you need the image as a standalone asset — in a document, a slide, an email signature, or anywhere you control the background yourself.

FAQ

Why is my circle on a white square?
Something converted it to JPG along the way. JPG can't store transparency, so the corners got filled. The tool itself outputs PNG — keep it that way.

Can I convert my JPG circle back to PNG to fix it?
No. The white corners are already baked in as opaque pixels. Re-crop from the original instead.

Should I upload a circle or a square as my avatar?
A square, almost always. Platforms that show circular avatars apply the mask themselves.