Box Shadow Generator
Generate CSS box-shadow with live visual preview.
How to use Box Shadow Generator
Open the Box Shadow Generator
Navigate to the tool and locate the main preview panel on the right side. You'll see a white box displaying your shadow in real-time as you make adjustments.
Adjust Horizontal Offset
Find the 'X Offset' slider on the left control panel. Drag it left (negative values) or right (positive values) to move the shadow horizontally. Values range from -100px to 100px.
Adjust Vertical Offset
Use the 'Y Offset' slider below X Offset to control vertical shadow position. Positive values move the shadow down, negative values move it up.
Set Blur Radius
Drag the 'Blur' slider to control shadow softness. Higher values (0-100px) create softer, more diffused shadows. Lower values create sharper edges.
Configure Spread Radius
Adjust the 'Spread' slider to expand or contract the shadow size. Positive values enlarge the shadow area, negative values shrink it (-50px to 50px range).
Choose Shadow Color
Click the color picker button labeled 'Color' to open the color palette. Select your desired shadow color or enter a hex code directly in the input field.
Adjust Shadow Opacity
Use the 'Opacity' slider to control shadow transparency. Values range from 0% (invisible) to 100% (fully opaque). Typical values are 20-50% for realistic shadows.
Copy CSS Code
Click the 'Copy' button below the generated code to copy the complete box-shadow CSS property to your clipboard. Paste directly into your stylesheet.
How to Use Box Shadow Generator Online — Free Guide (2026)
Box shadows are one of the most effective CSS techniques for adding depth and visual interest to web design. Whether you're a beginner or experienced developer, creating the perfect shadow manually requires mathematical precision and multiple preview cycles. The Box Shadow Generator eliminates this friction by providing a real-time visual editor that generates production-ready CSS code instantly.
What Is a Box Shadow?
A box shadow is a CSS property that adds one or more drop shadows to an HTML element. Unlike text-shadow, box-shadow can create shadows around any element including divs, buttons, cards, and images. The property accepts multiple values: horizontal offset, vertical offset, blur radius, spread radius, color, and opacity. Mastering box-shadow opens creative possibilities for modern UI design.
Step-by-Step Guide to Using Box Shadow Generator
Step 1: Access the Tool
Open the Box Shadow Generator in your web browser. No installation, account creation, or downloads required. The interface loads instantly with a preview panel displaying a sample element and control sliders on the left sidebar.
Step 2: Configure Offset Values
Start by adjusting the X-offset and Y-offset sliders. X-offset controls horizontal positioning (-100px to 100px), while Y-offset controls vertical positioning. These values determine where the shadow appears relative to your element. Positive X values push the shadow right; positive Y values push it down.
Step 3: Set Blur Radius
The blur radius slider controls shadow softness, ranging from 0px (sharp edge) to 100px (extremely diffuse). Most realistic shadows use 4-15px blur values. Increase the blur for subtle depth effects, decrease it for more defined shadows.
Step 4: Adjust Spread Radius
Spread radius expands or contracts the shadow size (-50px to 50px). Positive values make shadows larger; negative values shrink them. This parameter is optional and often left at 0px for standard shadows.
Step 5: Select Color and Opacity
Click the color picker to choose your shadow color. Most professional designs use black or dark gray, but colors matching your brand can create unique effects. Set opacity between 20-50% for natural-looking shadows. Fully opaque shadows (100%) appear unnatural.
Step 6: Create Multiple Shadows
Click "Add Layer" to stack multiple shadows. This advanced technique creates complex depth effects by combining shadows with different offsets, blur values, and colors. Separate each shadow with a comma in the final CSS.
Step 7: Copy and Paste CSS
Once satisfied with your preview, click "Copy" to copy the complete box-shadow property. Paste directly into your CSS file or inline style attribute. The generated code is production-ready and requires no modifications.
Common Box Shadow Use Cases
Elevated Cards: Use subtle shadows (0 2px 8px rgba(0,0,0,0.15)) on card components to create the illusion of elevation above the page surface.
Button Hover States: Add interactive shadows that intensify on hover (0 4px 12px rgba(0,0,0,0.25)) to provide visual feedback and improve UX.
Navigation Bars: Apply soft shadows (0 1px 3px rgba(0,0,0,0.1)) to sticky headers to separate them from content below.
Image Frames: Create artistic frames with larger spreads and varied colors to frame photos and illustrations stylishly.
Pro Tips for Better Shadows
Match Light Direction: Keep all shadows consistent by using the same offset direction throughout your design. If light comes from top-left, offsets should be positive.
Use Opacity Over Black: Instead of pure black shadows, use black with 15-30% opacity for more natural results that complement any background color.
Layer Multiple Shadows: Combine a close, soft shadow with a distant, harder shadow for cinematic depth:
0 1px 3px rgba(0,0,0,0.12), 0 8px 20px rgba(0,0,0,0.15).Test on Real Content: Always preview shadows on actual content and backgrounds. Pure white preview panels don't represent real-world conditions.
Consider Accessibility: Ensure shadows don't reduce text contrast or make elements harder to perceive for users with low vision.
Browser Compatibility
Box-shadow has been supported since CSS3 and works in all modern browsers including Chrome, Firefox, Safari, Edge, and Opera. Internet Explorer 9+ provides partial support. No vendor prefixes are required for current browser versions released after 2015.
Why Use Box Shadow Generator?
Manually calculating shadow values requires understanding CSS syntax and visual estimation. The Box Shadow Generator eliminates guesswork by showing real-time previews as you adjust each parameter. This free tool saves developers hours of trial-and-error, produces pixel-perfect results, and generates W3C-compliant CSS automatically.
Conclusion
The Box Shadow Generator transforms shadow creation from a technical chore into an intuitive visual process. Whether designing enterprise applications, creative portfolios, or e-commerce sites, professional shadows elevate your UI design instantly. Start using the free Box Shadow Generator today to create stunning visual depth without writing a single line of code manually.