Round Corners on Any Image — From Subtle Curves to Perfect Circles
Sharp 90-degree corners feel harsh and dated. Modern design language uses rounded corners everywhere — app icons, profile pictures, product cards, social media graphics. PikDraw's corner rounder lets you dial in exactly the radius you want, from a gentle 5px curve to a full circle, with transparent output that drops cleanly into any design.
What is the Round Image Corners - Any Size?
PikDraw's round corners tool clips the corners of your image to a specified radius, replacing the removed corner areas with transparency. The tool works on any image up to 50MB and outputs PNG format to preserve the transparent corners. It's a simple, focused tool that does one thing perfectly.
Key features
- Adjustable corner radius from subtle to maximum
- Transparent corner output in PNG format
- Works on any aspect ratio — squares, rectangles, and panoramas
- Real-time preview as you adjust the radius
- Files up to 50MB supported
- Full circle output from square images at max radius
- Browser-based processing
- No signup, no watermarks
How it works
The tool draws a rounded rectangle path on an HTML5 Canvas using the specified corner radius, then clips the source image to this path. Pixels outside the rounded rectangle become transparent. The result is exported as PNG to preserve the alpha channel. For maximum radius on square images, the path becomes a perfect circle. On rectangular images, the maximum radius creates a stadium/pill shape with fully rounded short sides.
Why use this tool
Most design tools require multiple steps to round corners: create a shape, clip the image, export with transparency. PikDraw does it in one click with precise radius control. Handles files up to 50MB, runs in your browser, completely free.
Common use cases
- Creating app-icon style profile pictures with modern rounded corners
- Preparing product images with rounded corners for clean e-commerce layouts
- Making social media graphics that match platform design language
- Creating avatar images with custom border radius for web applications
- Designing rounded thumbnails for video galleries and content grids
- Preparing images for UI mockups that need to match border-radius styling
Who should use this
UI designers creating rounded image assets. Social media managers making polished profile and post graphics. E-commerce teams standardizing product image styling. Web developers generating rounded thumbnails without CSS clipping. Anyone who wants modern-looking images without opening Photoshop.
How to get started
Upload an image, drag the radius slider, and download the PNG. For a perfect circle, upload a square image and max out the radius.
Best practices
- Export as PNG to preserve transparent corners — JPG will fill corners with a solid color
- For profile pictures, crop to a square first, then apply maximum corner radius for a circle
- Match your corner radius to your platform's design language (e.g., iOS uses ~22% radius for app icons)
- Pair rounded corners with a drop shadow for a polished floating-card effect
Pro tips
- Use maximum radius on a square image to create a perfect circle.
- Moderate radius (20-40px) gives a clean, modern app-icon look.
- Always export as PNG to preserve the transparent corners.
- Pair with drop shadow for a polished, floating card effect.
Limitations to be aware of
- Output is always PNG (larger file size) because transparency requires it
- Same radius applied to all four corners — no per-corner control
- No border or outline applied to the rounded edge — use the border tool separately
- Very small images with large radii may look heavily clipped