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About Image Rounded Corner Generator
The Image Rounded Corner & Squircle Cropper clips images to smooth circular radii (`border-radius: px/%`), perfect circles/avatars, or iOS-style continuous curvature squircles (superellipses) with transparent PNG/WebP exports.
How to Use Image Rounded Corner Generator
Step 1
Upload an image to crop.
Step 2
Select corner style (Rounded, Circle Avatar, or iOS Squircle).
Step 3
Adjust corner radius slider to achieve desired curvature.
Step 4
Click "Download Rounded Image".
Practical Use Cases for Image Rounded Corner Generator
Creating Circular Profile Avatars for Social & Web Apps
Crop square portrait photos into perfect 1:1 circular avatars with transparent background corners for Slack, Discord, and GitHub profiles.
Generating Apple iOS Continuous Squircle App Icons
Clip graphics to authentic Apple superellipse ($n = 4.0$) squircle curves for iOS app store icon assets.
Input & Output Examples
Rounding Image Corners by 24px
Square image 500x500, Corner Radius: `24px`
Smooth rounded image with transparent alpha corners exported as 32-bit PNG
Key Features & Performance
- ✓Corner Modes: Uniform Radius (`px`), Percentage (`%`), 100% Circle / Oval Avatar, and Apple iOS Continuous Squircle (Superellipse).
- ✓Individual corner control: customize Top-Left, Top-Right, Bottom-Right, Bottom-Left radii independently.
- ✓Exports with lossless transparent PNG and WebP alpha channels.
- ✓100% Client-Side Canvas 2D clipping path engine.
- ✓1-Click Download rounded image.
Key Terminology & Definitions
Squircle (Superellipse)
A mathematical curve with intermediate properties between a square and a circle, known for superior optical continuity compared to standard circular fillets.
Alpha Clipping Path
Using vector paths to mask raster pixel data, converting outer corner pixels into transparent alpha values.