Box Shadow Generator

📖 Tool Introduction

Box Shadow Generator is an online visual editor that helps front-end and UI designers dial in polished elevation shadows without hand-writing box-shadow values. Writing the property by hand means bouncing back and forth between a debug panel and your code, so this tool breaks the whole declaration down into four intuitive sliders: horizontal offset, vertical offset, blur radius and spread distance, plus color and opacity, and renders the result on a real card sitting over a checkerboard stage. Every pixel you drag is reflected immediately on that card. The tool supports stacked layers: click Add Layer and you get another independent shadow, the layers are joined with commas, the first one listed paints on top, and you may stack up to five to build a layered depth that falls off naturally from near to far. The layer list on the left shows a small color swatch for each layer, click any row to switch your editing target, and the sliders snap to that layer. Once it looks right, the code box at the bottom assembles the full box-shadow declaration automatically, ready to copy or save as a .css file. All rendering and code generation happen locally in your browser, fully offline. Elevation is one of the subtlest parts of modern interface design: a shadow that is too flat makes a card feel glued to the page, while one that is too heavy looks muddy and dated, and this tool lets you walk that line by ear instead of by trial. Stacking several layers is the trick behind the soft, layered depth seen in polished design systems, and being able to add, remove and recolor each layer independently means you can reproduce that look without ever opening a browser inspector.

✨ Key Features

• Live preview: a card casts its shadow on a checkerboard stage, updates as you drag
• Four sliders: X/Y offset, blur and spread, synced with exact number boxes
• Color and opacity: pick any hue, tune alpha independently, output rgba automatically
• Stacked layers: between one and five layers, switch targets by clicking the list
• Standard code: builds a proper box-shadow declaration ready to paste
• Example and download: a soft multi-layer preset loads instantly, code saves to a file

📝 How to Use

1. Click the layer you want to edit in the left list; the active row highlights
2. Drag the X/Y offset, blur and spread sliders and watch the card above
3. Recolor the shadow with the well and soften or deepen it with the opacity slider
4. Click Add Layer for richer depth, or Remove Layer to drop the current one
5. Click Copy Code to paste it into your project, or Download CSS to save it

⚠️ Notes

• Layer limit: between one and five layers are allowed, out-of-range attempts are warned
• Stacking order: the first listed shadow paints on top, layers reorder after deletion
• Ranges: offset -50 to 50px, blur 0 to 80px, spread -30 to 30px, opacity 0 to 100%
• Color output: shadow colors are emitted as rgba() with the alpha channel included
• Local only: rendering and code generation happen in your browser, no network request