Image Corner Rounder
Round the corners of images with custom radius. Create rounded corner photos with transparent backgrounds.
Input
Output
Readme
What are rounded corners in images?
Rounded corners are a design technique where the sharp 90-degree angles of a rectangular image are replaced with smooth, curved edges. This effect is achieved by applying a radius to each corner, creating an arc that softens the image's appearance. The larger the radius, the more pronounced the curve—with a maximum radius creating a fully circular or pill-shaped image.
Rounded corners became popular in modern UI design because they're easier on the eyes and create a friendlier, more approachable aesthetic. Studies suggest that humans naturally prefer curved shapes over sharp angles, as rounded edges feel safer and more organic.
Tool description
The Image Corner Rounder tool allows you to add rounded corners to any image with precise control over the corner radius. Upload your image, adjust the rounding amount using either pixel values or percentages, and download the result in your preferred format. The tool processes images entirely in your browser, ensuring your files remain private and secure.
Examples
| Original | Rounded (20px) | Rounded (50%) |
|---|---|---|
| Sharp rectangular corners | Subtle rounded edges | Pill or circular shape |
Input: A profile photo with sharp corners
Output: The same photo with smooth, rounded corners ready for use as an avatar
Features
- Pixel or percentage-based radius: Choose between exact pixel values or percentage-based rounding for consistent results across different image sizes
- Real-time preview: See changes instantly as you adjust the corner radius
- Multiple output formats: Export as PNG (with transparency), JPG, or WebP
- Quality control: Adjust output quality for JPG and WebP formats to balance file size and image quality
- Client-side processing: All image processing happens in your browser—no uploads to external servers
Use cases
- Social media avatars: Create rounded profile pictures for platforms that don't automatically apply corner rounding
- App icons and thumbnails: Design iOS-style app icons or rounded thumbnails for video platforms
- Product photography: Soften product images for e-commerce listings and marketing materials
- UI mockups: Prepare rounded screenshots and images for website and app design presentations
- Digital cards and badges: Create visually appealing ID cards, business cards, or achievement badges with rounded edges