There is no round image

The key to the whole topic: image files are always rectangular. A “round” image is a square image whose four corners have been made transparent — so that only the circle in the middle stays visible. Everything else follows from this, above all the most important practical consequence: you need a format that supports transparency.

So: always PNG

For the corners to stay transparent, the image needs an alpha channel — and that's offered by PNG, WebP and SVG, but not JPG. Save a round image as JPG and it fills the transparent corners with white, turning the circle back into a square with white wedges. It's the single most common mistake with round images. Why JPG does this and PNG doesn't is explained in The alpha channel and transparency.

How the round crop is made

  1. Crop to a square. First bring the image to 1:1 with the crop tool, the subject centered — the later circle only captures the middle, so anything important needs distance from the corners.
  2. Apply a circle mask. A circle is placed over the square; everything outside becomes transparent. In an image editor this is done with a circular selection or a mask.
  3. Save as PNG. Only this keeps the corners transparent.

The crucial mental trick while cropping: picture the circle already inside the square. A chin, hairline, or logo edge that sits close to a corner disappears — they need roughly 15% clearance from the edge.

The biggest time-saver: don't make profile pictures round at all

Many people painstakingly crop their profile picture into a circle — completely unnecessary. Instagram, Facebook, LinkedIn, WhatsApp & co. place the round mask over a square image themselves. So you upload square (subject centered), and the platform rounds it automatically. A PNG you've made round yourself can even produce ugly edges there. Upload square and let the platform do the rounding.

When you really need the round image

Cropping round yourself is only worth it where no platform applies the mask:

  • your own website (team page, author image)
  • presentations and documents
  • newsletters and email signatures
  • graphics where a round element is placed freely

In all these cases you need the round PNG file — and then the PNG rule above applies.

In short

  • Round = square with transparent corners.
  • Always PNG, never JPG (white wedges).
  • Square first, then circle mask, keep the subject clear of corners.
  • Profile pictures: upload square, the platform rounds them.