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What Are Rounded Corners for Images
Rounded corners replace the sharp 90-degree corners of a rectangular image with smooth arcs, creating a softer, more modern appearance. The radius controls how pronounced the rounding is, from a subtle softening to fully circular edges that produce pill-shaped or circular images.
Rounded corners are a fundamental element of modern UI design, used extensively in app icons, profile images, card layouts, and marketing materials. The technique requires transparent export since the clipped corners need to show through to the background they are placed on.
How the Round Corners Tool Works
Set the corner radius for each corner independently and export with transparent background.
- Upload your image — select any JPG, PNG, or WebP file from your device
- Set corner radius — use the slider to set a uniform radius or adjust each corner independently for asymmetric rounding
- Download as PNG — the rounded image is exported with transparent corners as a PNG file
Try it free — no signup required
Open Round Corners Tool →When To Use Rounded Corners
Rounded corners improve the visual appeal of images in modern digital contexts.
- App icon creation — round the corners of icon artwork to match platform icon specifications for iOS and Android app stores
- UI card images — prepare images for card-based layouts where rounded corners match the card container design, avoiding the awkward look of square images in rounded containers
- Profile pictures — create rounded or circular profile images for social media, forums, and messaging platforms that look polished and professional
Frequently Asked Questions
Why is the output always PNG?
Rounded corners create transparent areas where the original square corners were. JPEG does not support transparency, so the output must be PNG to preserve the transparent corners. This ensures the image looks correct when placed on any background color.
Can I set different radii for each corner?
Yes. The tool supports per-corner radius control. You can round just the top corners for tab-like shapes, or use different radii for creative asymmetric designs. A uniform slider sets all four corners at once for convenience.
What radius creates a perfect circle?
Setting the radius to half the shortest dimension of the image creates a circle from a square image or a pill shape from a rectangular image. For a 500 by 500 pixel image, a radius of 250 produces a perfect circle.