CSS Box Shadow Generator

Shadows (1)

0px
4px
12px
0px
25%
12px

Presets

CSS
box-shadow: 0px 4px 12px 0px rgba(0, 0, 0, 0.25);

What This Tool Does

CSS Box Shadow Generator is built for deterministic developer and agent workflows.

Visual CSS box-shadow generator with multiple layers, live preview, presets, and instant CSS copy.

Use How to Use for execution steps and FAQ for constraints, policies, and edge cases.

Last updated:

This tool is provided as-is for convenience. Output should be verified before use in any production or critical context.

Agent Invocation

Best Path For Builders

Browser workflow

Runs instantly in the browser with private local processing and copy/export-ready output.

Browser Workflow

This tool is optimized for instant in-browser execution with local data handling. Run it here and copy/export the output directly.

/box-shadow-generator/

For automation planning, fetch the canonical contract at /api/tool/box-shadow-generator.json.

How to Use CSS Box Shadow Generator

  1. 1

    Add your first shadow layer

    Click 'Add Shadow' to start with one layer. Adjust X offset (horizontal), Y offset (vertical), blur radius, and spread radius using sliders.

  2. 2

    Control shadow color and opacity

    Pick a shadow color and set opacity (0-100%). Darker shadows with 30-50% opacity look natural. Adjust for your design aesthetic.

  3. 3

    Stack multiple shadows for depth

    Click 'Add Shadow' again to layer multiple shadows. Combine soft blur (for outer shadow) with sharp blur (for inner definition) for realistic depth.

  4. 4

    Preview in real-time

    See your box shadow applied to a sample element on the right. Move the element around to verify shadow quality at different positions.

  5. 5

    Copy CSS to your stylesheet

    Copy the generated `box-shadow` CSS property. It's ready to paste into your CSS file or inline styles. Supports legacy and modern syntax.

Frequently Asked Questions

What is CSS Box Shadow Generator?
CSS Box Shadow Generator is a visual tool for creating CSS box-shadow effects with multiple layers, live preview, and presets. It outputs clean CSS you can copy directly into your stylesheets.
How do I use CSS Box Shadow Generator?
Adjust shadow parameters like offset, blur, spread, and color using sliders or input fields. Add multiple shadow layers, toggle inset shadows, and choose from presets. The live preview updates in real time, and you can copy the CSS quickly.
Is CSS Box Shadow Generator free?
Yes. This tool is free to use with immediate access—no account required.
Does CSS Box Shadow Generator store or send my data?
No. All processing happens entirely in your browser. Your data never leaves your device — nothing is sent to any server.
Can I layer multiple shadows?
Yes. You can add as many shadow layers as you want, each with independent offset, blur, spread, color, and inset settings. Layered shadows are combined in the CSS output, letting you create complex depth effects and neumorphic designs.