Border Radius Visualizer

Border Radius Visualizer is the fastest way to fine-tune rounded corners and generate production-ready Flutter BorderRadius code — completely offline, with zero runtime dependencies - NO internet
Drag any of the four independent corner sliders — Top Left, Top Right, Bottom Right, Bottom Left — and watch your shape update live with beautiful, smooth animations in real time.

The app automatically generates the most concise Flutter code: BorderRadius.circular() when all corners are equal, BorderRadius.only() when they differ, and BorderRadius.zero for flat corners. One tap copies the code straight to your clipboard.

Lock All corners in sync with a single toggle — slide any one corner and all four move together. Need to start over? The Reset button clears everything instantly without interruption.

Choose from 12 handpicked presets — from sharp (0px) to fully circular — with a mini shape preview for each. Tap any preset to jump directly to a common shape like pill, leaf, top-rounded, and more.

Cycle through five vibrant fill colors for the preview box so you can see exactly how your shape looks against your palette. The preview box is animated and updates every time you move any slider.

Works 100% offline with no internet access, no ads, no account, and no permissions required. Clean, modern light theme designed for speed and daily developer use.
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