CSS Box Shadow Generator

Design multi-layer CSS box-shadows with live preview

🔒 100% ブラウザ内🆓 ずっと無料⚡ サインアップ不要
注意: 下記のツールインターフェースは現時点で英語のみに対応しています。UI の翻訳は順次進めています。 このツールを英語で見る →
Layer 1

使い方

  1. 1
    Adjust sliders

    Move x, y, blur, spread, and pick a color. The preview updates instantly.

  2. 2
    Add more layers

    Real design-system shadows stack multiple layers - hit + Add layer to build depth.

  3. 3
    Copy the CSS

    Paste the ready-to-use box-shadow declaration into your stylesheet.

CSS Box Shadow Generator について

Free online CSS box-shadow generator. Design elegant multi-layer shadows with sliders for x, y, blur, spread, and color, plus inset support. Live preview and one-click CSS copy. Runs entirely in your browser. 712 Tools の CSS Box Shadow Generator はモダンな JavaScript API を使って完全にブラウザ内で動作します - サーバーがあなたのデータを見ることは一切ありません。つまり、即時の結果、完全なプライバシー、アップロード制限なしです。

デバッグ、簡単な確認、あるいは本番のインシデント対応まで - このツールは何度でも無料で使えます。ウォーターマークなし、サインアップなし、ツール内広告なし。

よくある質問

Why layer multiple shadows?

One shadow rarely looks natural. Design systems like Material and Tailwind's default shadow use two or three layered shadows for realistic depth.

What's the difference between blur and spread?

Blur softens the edge (Gaussian falloff). Spread expands or contracts the shadow before blurring - useful for tighter, harder shadows.

When should I use inset?

Inset shadows draw inside the box - great for pressed-button effects, subtle inner glows, or 'inset' form fields.

続きを読む

5 分で読了

Glassmorphism, neumorphism, and where 2026 UI is actually heading

The design trends that shipped, the ones that flopped, and what makes modern UI actually feel modern - from frosted glass to soft shadows to conic gradients.

5 分で読了

Tailwind to plain CSS: migration, extraction, and component patterns

You inherited a Tailwind codebase and want to extract a component library. Or you're moving away from Tailwind entirely. Here's how the utility classes map to real CSS.

4 分で読了

CSS box-shadow patterns that look professional (not cheap)

A single 5px shadow makes any UI look like a bootstrapped 2015 landing page. Here are the layered-shadow patterns that modern design systems use - Material, Tailwind, Apple.

関連ツール

Color Converter

Convert between HEX, RGB, HSL, and CMYK with live preview

Palette Generator

Generate harmonious color palettes from a base color

CSS Gradient

Design linear, radial, and conic CSS gradients with live preview

Contrast Checker

Check text/background contrast against WCAG 2.1 AA and AAA - live preview

Glassmorphism

Design frosted-glass CSS cards with live preview and copy-ready code

Physics Editor

Free online sprite hitbox editor - auto-trace collision polygons and export for Phaser, Matter.js, Rapier or any 2D engine