
corner-design
Interactive CSS corner and border-radius designer
corner-design Overview
corner-design is a specialized visual tool that helps developers and designers debug and create custom CSS border-radius and corner-shape properties. It provides an interactive interface with sliders to adjust superellipse() parameters in real-time, allowing users to instantly see the visual impact of their changes. Once satisfied with the design, users can simply copy the generated CSS code for immediate use in their projects. This tool is particularly valuable for front-end developers and UI designers who need precise control over element corner styling, helping them create unique and visually appealing interfaces without manual CSS trial-and-error.
corner-design Screenshot

corner-design Official screenshot of the tool interface
corner-design Core Features
Interactive CSS Border Radius Designer
Easily create and adjust complex border-radius values with a visual interface. The tool supports percentage-based radius values for each corner, allowing for organic, asymmetrical shapes. The immediate visual feedback eliminates guesswork from CSS styling.
Superellipse Parameter Control
Fine-tune superellipse() parameters with intuitive sliders for each corner. This advanced feature enables creation of mathematically precise curvatures that go beyond standard circular or elliptical borders, supporting values from negative to positive ranges for diverse effects.
Real-time CSS Code Generation
The tool automatically generates clean, optimized CSS code as you adjust parameters. The code follows current CSS specifications and is immediately ready for production use, saving developers from writing complex corner styling manually.
One-click Code Copy
With a single click, copy the complete CSS code for your custom corner design to clipboard. The copied code includes both border-radius and corner-shape properties, formatted for easy integration into any stylesheet.
Visual Debugging
Eliminate the need for constant browser refreshing when styling corners. The tool provides a live preview that accurately represents how the final design will appear, helping identify and fix styling issues immediately.
corner-design Use Cases
Creating Unique UI Components
Designers can use corner-design to create distinctive buttons, cards, or containers with custom corner shapes that stand out from standard rounded rectangles. This is particularly valuable for branding purposes or creating memorable UI elements.
CSS Debugging and Education
Developers learning CSS can use the tool to understand how border-radius and corner-shape properties work. The immediate visual feedback helps clarify complex concepts like superellipse parameters and percentage-based radius values.
Rapid Prototyping
UI/UX teams can quickly experiment with different corner styles during the design phase. The tool allows for instant visualization of design concepts without writing any code, speeding up the iteration process.
Creating Organic Shapes
Artists and creative developers can use corner-design to generate organic, non-geometric shapes for artistic projects or experimental interfaces. The ability to control each corner independently allows for highly customized forms.
How to Use corner-design
Access the corner-design tool through your web browser. No installation or registration is required - simply navigate to the website to begin designing immediately.
Adjust the border-radius values for each corner using the percentage sliders. Observe how changes affect the shape in real-time through the visual preview.
Fine-tune the corner shaping by modifying the superellipse() parameters for each corner. Experiment with different values to achieve unique, mathematically precise curves.
Review your design in the preview area. The tool automatically updates the CSS code display as you make adjustments.
Click the copy button to copy the generated CSS code to your clipboard. The code is ready for immediate use in your project's stylesheet.