Rounded Corner Image Generator
Round image corners and download as PNG
Rounded Corner Image Settings
Drop file here
Supports JPEG, PNG, GIF, and WebP.
All processing is done securely in your browser and never uploaded to a server.
Preview
Please select an image
What is Rounded Corner Image Generator?
A tool for rounding image corners and downloading as PNG. Simply adjust the corner radius with a slider and preview the result in real-time to create the perfect rounded image.
Perfect for SNS profile icons, website thumbnails, app icons, and any design requiring rounded corners. All processing is done entirely in your browser, and images are never sent to any server.
Key Features
- Real-time Preview: Changes are reflected instantly as you adjust the radius
- Flexible Radius Control: Set from 0px to a maximum based on image size
- PNG Output: Saves with transparent corners preserved
- Privacy Protection: Images are processed only in your browser
Use Cases
📱 Creating SNS Icons
Many social platforms like Instagram, Twitter, and LINE display profile images as circles or rounded squares. Applying rounded corners beforehand lets you accurately preview how your image will appear after upload.
🎨 Preparing Web Design Assets
Quickly create assets requiring rounded corners like banner images, thumbnails, and card UI images. Complete everything in your browser without launching image editing software like Photoshop.
📦 App Icon Preparation
iOS and Android app icons use rounded corners by default. Apply realistic rounded corners when creating design mockups to preview the actual appearance.
How to Use
- Drag and drop an image file into the drop area, or click to select
- Adjust the roundness using the "Corner Radius" slider
- Check the preview for the final result
- Click "Download as PNG" to save
The preview updates in real-time as you move the slider.
Frequently Asked Questions
What image formats are supported?
Supports JPEG, PNG, GIF, and WebP formats. Output is always in PNG format, with rounded areas saved as transparent.
What is the maximum corner radius?
The maximum is half of the image's shorter side. For example, a 200×300px image allows up to 100px. Setting the maximum creates a perfect semicircle on the shorter side.
Will image quality degrade?
PNG uses lossless compression, so there is no quality degradation from the rounding process. The original resolution is maintained.
Usage Notes
The output PNG image will have transparent areas where corners are rounded. If you need a background color, add it using image editing software after downloading.