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Home/Tools/Development Tools/Box Shadow Generator

Development Tools

Box Shadow Generator — Visual CSS Shadows

Design CSS box-shadow with offset, blur, spread, and color. Live preview and copy-ready code — free dev tool.

Box Shadow Generator on FYN Tools is a free Development Tools utility. Open Box Shadow Generator in your browser — no signup required. Box Shadow Generator: Builds box-shadow from offset, blur, spread, and color with a live preview. Input: X/Y offset, blur, spread, RGBA color, inset toggle. Output: box-shadow CSS declaration. Related: JSON Beautifier & Formatter.

Privacy & processing: Runs in your browser on FYN Tools — no account required for basic use.

Quick facts — Box Shadow Generator

100% Client-Side Processing

Builds box-shadow from offset, blur, spread, and color with a live preview. Runs in your browser on FYN Tools — no account required for basic use.

Purpose
Builds box-shadow from offset, blur, spread, and color with a live preview.
Inputs
X/Y offset, blur, spread, RGBA color, inset toggle
Outputs
box-shadow CSS declaration
Privacy
Runs in your browser on FYN Tools — no account required for basic use.Processing: Client-side (browser)Limits: Preview in tool — paste into your project manually
Watch-out
Stacking a huge blur with 100% black — shadows look like a smudge, not elevation.

TL;DR: Box Shadow Generator: Builds box-shadow from offset, blur, spread, and color with a live preview. Input: X/Y offset, blur, spread, RGBA color, inset toggle. Output: box-shadow CSS declaration.

Reviewed by FYN Tools Editorial · Guides · Updated 2026-09-23

Data input / output

Supported inputs, outputs, formats, limits, and where processing runs for Box Shadow Generator
InputsCSS parameters or markup/table paste
OutputsGenerated CSS snippet or JSON output
FormatsCopy-paste code
LimitsPreview in tool — paste into your project manually
ProcessingClient-side (browser)

How to Use the Box Shadow Generator

  1. Adjust the horizontal (X) and vertical (Y) shadow offset to position your shadow
  2. Set the blur radius to control how soft or sharp the shadow edges appear
  3. Control the spread radius to expand or contract the shadow size
  4. Choose your shadow color using the color picker and adjust transparency with opacity
  5. Enable the inset option to create inner shadows that appear inside the element
  6. Preview the shadow effect in real-time on the sample box

What is a Box Shadow Generator?

Box Shadow Generator: Builds box-shadow from offset, blur, spread, and color with a live preview.

Inputs: X/Y offset, blur, spread, RGBA color, inset toggle. Outputs: box-shadow CSS declaration. Mistake to avoid: stacking a huge blur with 100% black — shadows look like a smudge, not elevation.

Box Shadow Generator: Builds box-shadow from offset, blur, spread, and color with a live preview.

How it works

Tweak shadow layers on the preview card; the tool outputs the full box-shadow declaration including inset shadows when enabled.

Explore more tools on our site.

Usage scenarios

  • Soft card lift: Y 8px blur 16px 18% black — typical dashboard card.
  • Neumorph inset: Toggle inset for a pressed control.
  • Layered glow: Copy two shadows: a tight dark one plus a colored glow.

Input / Output Examples

Input

Offset X 4px · Y 8px · Blur 16px · Spread 0 · Color rgba(0,0,0,0.18)

Output

box-shadow: 4px 8px 16px 0 rgba(0,0,0,0.18);  + live preview card

Input

Second pass on /box-shadow-generator with adjusted settings

Output

Updated result from the live panel — copy or download when ready

Frequently Asked Questions

What is a Box Shadow Generator?+

A Box Shadow Generator is a free online tool that helps you visually create CSS box-shadow values and instantly copy the generated CSS code. It provides real-time preview of shadow effects with adjustable parameters like offset, blur, spread, color, and opacity, making it easy for web designers and developers to create perfect shadows without manual coding.

Is the Box Shadow Generator free to use?+

Yes, the Box Shadow Generator is completely free and works directly in your browser without requiring any sign-up, registration, or payment. All features are available immediately with no limitations or hidden costs.

What is the difference between blur and spread?+

Blur radius controls how soft or sharp the shadow edges are - higher blur values create softer, more diffused shadows, while lower values create sharper, more defined edges. Spread radius controls how much the shadow expands or contracts from the element - positive values make the shadow larger, while negative values make it smaller than the element itself.

Can I create multiple shadows on one element?+

Yes, you can add multiple box-shadow effects by separating them with commas in the CSS. This creates layered shadow effects, allowing you to combine different shadow styles for more complex and visually appealing designs. Our generator supports this feature, and you can manually combine multiple shadow values in your CSS.

What are inset shadows?+

Inset shadows appear inside the element instead of outside, creating effects like pressed buttons, inner glows, or recessed panels. When the inset option is enabled, the shadow is rendered within the element's boundaries, giving it a sunken or embossed appearance that's perfect for creating depth and dimension in UI elements.

Will these shadows work in all browsers?+

Yes, the CSS box-shadow property is well-supported in all modern browsers including Chrome, Firefox, Safari, Edge, and Opera. The generated CSS will work across all current web browsers. For older browsers (IE8 and below), you may need fallback solutions, but all modern browsers fully support box-shadow without any issues.

How do I use the generated CSS code?+

Simply copy the generated CSS code from the tool and paste it into your stylesheet or inline style attribute. The code follows the standard CSS box-shadow syntax: box-shadow: [offset-x] [offset-y] [blur] [spread] [color]. You can apply it to any HTML element by adding it to the element's style property or CSS class.

Can I save my shadow configurations?+

While the tool doesn't have a built-in save feature, you can easily copy the generated CSS code and save it in your own code repository, notes, or design system documentation. The CSS values are standard and can be reused anytime by pasting them back into your stylesheet.

Next steps — related tools

Browse more free Development Tools, the FYN Tools homepage, or the full FYN Tools catalog.

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Key Features

  • Customize box shadow
  • X offset
  • Y offset
  • Blur radius
  • Spread radius
  • Shadow color
  • Multiple shadows
  • Live preview

Benefits

Box Shadow Generator runs without installing desktop software

Accepts: X/Y offset, blur, spread, RGBA color, inset toggle

Returns: box-shadow CSS declaration

When to Use Box Shadow Generator

  • When you need builds box-shadow from offset, blur, spread, and color with a live preview. without another app
  • When your input looks like: X/Y offset, blur, spread, RGBA color, inset toggle

Advantages

  • Box Shadow Generator runs without installing desktop software
  • Accepts: X/Y offset, blur, spread, RGBA color, inset toggle
  • Returns: box-shadow CSS declaration
  • How-to and FAQs for Box Shadow Generator live on the same page

Tips

  • Read the Privacy & processing note before you paste secrets.
  • Stacking a huge blur with 100% black — shadows look like a smudge, not elevation.
  • Copy Box Shadow Generator output immediately if you will close the tab.

Common Mistakes

Stacking a huge blur with 100% black — shadows look like a smudge, not elevation.

Treating one run as final without checking units or a second sample.

Ignoring related tools when the next step is resize, compress, or convert.

Summary

Use Box Shadow Generator on this page, then browse related development tools linked below.

About this page

Box Shadow Generator is maintained by FYN Tools Editorial. See our about and contact pages for ownership, editorial standards, and support.

Last content update: 2026-09-23 · Published 2026-09-03

Prefer browser-side tools when handling sensitive drafts. Do not paste production secrets, customer PII, or live API keys into online forms.

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