What is a CSS Box Shadow Generator? A CSS box shadow generator helps you create shadow effects for HTML elements visually. Box shadows add depth, emphasis, and visual hierarchy to web designs — from subtle elevation cues to dramatic glow effects.
Understanding shadow properties. Offset X/Ycontrols the shadow's position relative to the element. Blur softens the shadow edge — higher values create softer shadows. Spread expands or contracts the shadow size.Color sets the shadow color (use transparency for realistic shadows).Inset places the shadow inside the element for pressed or recessed effects.
Multiple shadow layers.Realistic shadows often use multiple layers at different offsets and blurs. This is called "layered shadows." For example, a floating card effect uses a small offset shadow for the near edge and a larger, more blurred shadow for the distant edge. Try the "Long Shadow" preset to see layered shadows in action.
Experiment with the controls to create your perfect shadow. Preview changes in real time on the demo box, then copy the generated CSS for use in your projects.
Frequently Asked Questions
Q:How do I create a realistic shadow?
Use semi-transparent colors (hex with alpha like #00000033 or rgba(0,0,0,0.2)) rather than solid colors. Layer multiple shadows: a small offset with low blur for the close shadow and larger offset with more blur for the distant shadow. The "Long Shadow" preset demonstrates this technique.
Q:What is the difference between box-shadow and drop-shadow?
box-shadow creates a rectangular shadow around the element box, while filter: drop-shadow() creates a shadow that follows the element's actual shape, including transparency. For irregular shapes (PNGs with transparency, clipped elements), use drop-shadow. For UI cards and buttons, use box-shadow.
Q:Are multiple box shadows supported in all browsers?
Yes, multiple box shadows are supported in all modern browsers. CSS3 box-shadow has been supported since Chrome 10+, Firefox 4+, Safari 5.1+, and IE 9+. Multiple shadows are created by separating each shadow definition with a comma.
Q:What does the inset keyword do?
Inset draws the shadow inside the element, creating a recessed or pressed-in effect. This is commonly used for pressed buttons, inset text fields, or to create inner borders. Without inset, shadows appear outside the element and create raised or floating effects.
Q:How do I create a glow effect?
Set offset X and Y to 0, then use a bright color with some blur. For a neon glow, use multiple layers: one with small blur and full opacity color, another with larger blur and the same color at 30-50% opacity. The "Neon Glow" preset demonstrates this effect.