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Rounded Image Generator
If this tool helped you, you can buy us a coffee ☕
Easily add rounded corners to images online for free. Customize the border radius and export high-quality PNGs with transparent backgrounds instantly.
Output is PNG to preserve transparency
Click or drag images to add rounded corners (batch supported)
Image (Supported formats: .avif, .bmp, .gif, .jpeg, .jpg, .png, .webp)
Max 1 MB
Random Color Generator
Provides controllable random color generation for designers and developers, supporting multiple formats and hue filtering.
Pixel to Millimeter Converter
Convert between pixels and millimeters based on PPI density. Supports custom density values, ideal for UI design and print layout.
Pixel to Centimeter Converter
Input pixel values and PPI to instantly convert to corresponding physical length in centimeters, also supports reverse conversion from centimeters to pixels, suitable for graphic design, UI slicing, and print layout.
Upload an image to automatically crop it with smooth rounded corners, solving the issue of harsh right angles in UI designs. Powered by Canvas rendering technology, this tool calculates pixel masks in real-time and outputs PNGs with transparent backgrounds, making it perfect for all types of web and app design scenarios.
We recommend keeping uploaded image files under 10MB, as excessively high resolutions may cause browser rendering delays. If the border radius exceeds half of the image's width or height, it will automatically be constrained to a perfect circle. All processing is done locally in your browser, and your image data is never stored or saved.
In front-end web development, while the CSS border-radius property can create rounded corners, it may render inconsistently across different browsers. Using this tool to pre-generate rounded PNGs with transparent channels completely resolves cross-platform rendering compatibility issues. We recommend preparing 2x or 3x sized assets for UI components to meet the high-definition display requirements of Retina screens.
