CSS Shape Generator

📖 Tool Introduction

The CSS Shape Generator is a free online tool that helps developers carve out geometric outlines with clip-path. When a page needs a triangular tag, a diamond card, a honeycomb hexagon, a five-pointed star, a speech bubble or a slanted banner, the old ways were either slicing an image or hand-calculating the polygon percentage vertices, which was tedious and error-prone. This tool turns six common shapes into one-tap buttons: you pick a shape, choose a fill colour and drag a morph slider, and the preview block is clipped into the matching outline in real time while the standard clip-path: polygon(...) code is produced below. The morph parameter means something different for each shape — it controls the apex position for the triangle, the horizontal cut width for the hexagon, the inner radius for the star, the tail landing point for the bubble and the cut depth for the slant — and every vertex is computed live from the coordinate formula. The generated code can be copied straight into a project, and clip-path clips colour blocks as easily as images. Everything is assembled locally in your browser with no network request, and the interface ships in Simplified Chinese, Traditional Chinese and English. Since clip-path only hides the parts of an element outside the polygon, the underlying box keeps its normal size and flow, which means you can place text inside a clipped card, overlay a photograph, or rotate and scale the shape without breaking the surrounding grid. The same vertex math that draws the preview also drives the output, so the code you copy always matches the outline you tuned. Hand-editing percentage polygons by eye is slow and easy to misread, but with this tool you can sweep through triangle cuts, deep stars and chat bubbles in seconds and settle on the exact look your interface needs.

✨ Key Features

• Six geometric outlines: triangle, diamond, hexagon, star, bubble and slant switched in one tap
• Live vertex math: computes polygon vertices from the morph parameter with exact coordinate formulas
• Free colour picking: any fill colour chosen, preview updates instantly
• Tunable morph: apex, cut, inner radius, tail position and slant depth slide smoothly
• Standards-based output: produces the full CSS rule with background and clip-path
• Live preview: the clipped block shape is true to what you see

📝 How to Use

1. Click the shape you want at the top
2. Use the colour picker to set the fill colour
3. Drag the morph slider and watch the preview block change outline
4. Once the shape and colour feel right, read the CSS code below
5. Click copy code and paste it into your stylesheet to apply to any element

⚠️ Notes

• Clipping essence: clip-path only changes the visible area; the element box itself stays a rectangle
• Parameter meaning: the same slider drives different vertices per shape, so its meaning changes when you switch
• Star algorithm: the five-pointed star samples five outer and five inner vertices alternately
• Images work too: clip-path applies to img as well for irregular image crops
• Fully local: all vertex strings are assembled in the browser with no network request at all