imagetoolbox

Round image corners or crop a circle

A radius slider for soft corners, or one switch for a perfect circle. The corners come out transparent.

  • Free
  • Runs on your device
  • No account
  • No limits

How to round image corners or crop a circle

  1. Drop an image in the box above.
  2. Drag the radius slider, or flip on Circle for a round avatar. Circle crops to a centred square first.
  3. Download as PNG or WebP to keep the transparent corners.

About rounding corners here

The corners become truly transparent, not painted white, so the image sits cleanly on any background. Circle mode first cuts a square from the middle, which is what avatar pictures need.

Download as PNG or WebP to keep the transparent corners. JPG can't store them, so it fills them with the colour you pick in the download bar.

Like everything on this site, this tool runs in your browser. Your image is never uploaded.

Common questions

Is the round corners tool free?

Yes, properly free. No paid tier, no trial, no watermark on the result and nothing to sign up for. Put as many files through it as you like, as often as you like.

Are my files uploaded to a server?

No. The round corners tool runs inside your browser, on your own machine, so your files never go anywhere. Big ones are fine too, up to whatever your browser can hold.

How do I make a circular profile picture?

Turn on Circle. The image is cropped to a centred square first and then cut to a circle, with everything outside it transparent. Download as PNG or WebP, because a JPG has no way to store the transparent area and would fill the corners with a solid colour instead.

Why did my rounded corners come out black or white?

That's what happens when the result is saved as JPG. The corners are transparent, JPG can't store transparency, so every see-through pixel has to become a real colour. Save as PNG or WebP and the corners stay clear against whatever the image sits on.

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