Box Shadow Generator

How to Use the Box Shadow Generator

1. Adjust Sliders: Use the Offset X, Offset Y, Blur, and Spread range sliders to shape your shadow. The live preview box updates instantly as you drag — no need to click any button.
2. Set Color & Opacity: Pick a shadow color using the color picker and control transparency with the Opacity slider. Combine these for subtle depth or dramatic glows.
3. Toggle Inset: Check the "Inset" checkbox to create an inner shadow — useful for pressed buttons, recessed panels, or input field depth.
4. Use Presets: Click any preset button (Soft, Medium, Hard, Glow Purple, Glow Red, Neumorphic, Layered) to instantly load a professionally tuned shadow configuration.
5. Copy CSS: Click "Copy CSS" to copy the complete box-shadow property value to your clipboard, ready to paste into your stylesheet.

Technical Overview & Use Cases

The CSS box-shadow property accepts offset-x, offset-y, blur-radius, spread-radius, and color values. This generator computes RGBA colors from hex input + opacity percentage, producing production-ready CSS. It supports both outer shadows (default) and inset shadows, as well as multiple shadow layers via presets. The live preview uses direct DOM style manipulation — the preview element's style.boxShadow is updated on every slider input event for zero-latency feedback.

Real-world use cases:

• UI card design: Create depth and elevation hierarchy in dashboards, product cards, and modal dialogs following Material Design or Apple HIG elevation principles.
• Neumorphism: Design soft UI (neumorphic) interfaces using dual-shadow techniques — a light shadow and dark shadow creating the illusion of extruded elements.
• Glow effects: Build neon-glow buttons, focused input field highlights, or attention-grabbing CTAs using zero-offset, high-blur colored shadows.

Privacy & Security Guarantee

This tool is part of the FAK LAB ecosystem, founded by Faizan Ahmad Khan Khichi. The shadow generator runs 100% in your browser — it's pure CSS computation with no server calls. Your design choices, color values, and generated code are never transmitted anywhere. No analytics track which shadows you create, and no design data is stored beyond your current session.

Frequently Asked Questions

What is the difference between blur and spread?

Blur controls how diffused (soft/hard) the shadow edges appear — higher values create softer, more gradual shadows. Spread controls the shadow's size — positive values expand the shadow beyond the element's boundaries, negative values shrink it. A shadow with 0 blur and positive spread creates a solid border-like effect.

Can I use multiple shadows on one element?

Yes. CSS allows comma-separated multiple shadows on a single element. The "Layered" and "Neumorphic" presets demonstrate this — they apply two shadows simultaneously. You can manually combine shadows by copying individual values and joining them with commas in your stylesheet.

Does box-shadow affect page performance?

Moderately. Box shadows require GPU compositing, especially with large blur values. On modern devices, single shadows have negligible performance impact. However, applying high-blur shadows on hundreds of animated elements can cause jank. For performance-critical animations, consider using filter: drop-shadow() or pre-rendered shadow images instead.