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Round Corners

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Free Online Round Corners Tool - Add Rounded Edges to Images

Add rounded corners to images online for free with imgBig.com. Customize the corner radius in pixels and choose between a transparent background (for PNG export) or a solid color background. Export your image as a PNG with smooth, anti-aliased rounded corners — perfect for web design, app icons, social media profile pictures, and modern UI presentations. Rounded corners are a key design trend used by Apple, Google, and all major tech companies for app icons, cards, buttons, and images. No design software needed — upload your image, set the radius, and download instantly from your browser.

How to Add Rounded Corners to an Image

  1. Upload your image by clicking, dragging, or pasting a URL
  2. Set the corner radius in pixels — higher values create rounder corners
  3. Choose a background color or keep it transparent for PNG export
  4. Click "Round Corners" and download your image with smooth rounded edges

Frequently Asked Questions

What corner radius should I use?

For app icons, use a radius of about 20-25% of the image size. For web cards and thumbnails, 10-20px works well. For fully circular images (profile pictures), set the radius to half the image width.

Should I use transparent or colored background?

Use transparent background (PNG) if you'll place the image on varying backgrounds. Use a colored background if the image will always appear on a specific color.

Can I make a circular image?

Yes. Set the corner radius to half the width (or height) of your image to create a perfect circle. This is ideal for profile pictures and avatars.

Why Round Image Corners?