CSS Box Shadow Generator

What is a CSS Box Shadow Generator?

The CSS box-shadow property adds shadow effects around an element's frame, creating depth and elevation in your interface. The syntax combines horizontal and vertical offsets, blur radius, spread radius, a color, and an optional inset keyword — easy to mistype and hard to fine-tune blindly. A generator lets you dial it in visually.

Our CSS Box Shadow Generator provides sliders for every parameter and a live preview so you can see exactly how the shadow looks as you adjust it, then copy the precise box-shadow declaration.

Understanding the Parameters

• Offset X — moves the shadow left (negative) or right (positive)
• Offset Y — moves the shadow up (negative) or down (positive)
• Blur — how soft and diffuse the shadow edges are
• Spread — grows (positive) or shrinks (negative) the shadow size
• Inset — places the shadow inside the element instead of outside

Tips for Realistic Shadows

Natural shadows are usually soft and subtle. Use a positive Y offset (light coming from above), a generous blur, and a low opacity for a believable elevation effect. A slight negative spread keeps the shadow tight to the element. Very dark, hard shadows often look artificial.

For layered depth, real designs frequently stack multiple shadows. Inset shadows are great for pressed buttons, input fields, and creating a sense of recessed depth.

Why Box Shadows Matter

Shadows communicate hierarchy and interactivity — they make cards float above the page, buttons feel clickable, and modals stand out from the background. Used consistently, they give an interface a polished, tactile, modern feel. This tool generates the CSS entirely in your browser for instant results.