Visually generate CSS box-shadow with live preview. Adjust offset, blur, spread, color and opacity with sliders.
The CSS Box Shadow Generator lets you create perfect box-shadow values visually without writing a single line of CSS by hand. Adjust horizontal and vertical offsets, blur radius, spread, color, and opacity with interactive sliders and watch the live preview update in real time. Copy the ready-to-use CSS output directly into your stylesheet.
The generator uses JavaScript to listen for slider and input events, then dynamically constructs the CSS box-shadow property string from the current values for horizontal offset, vertical offset, blur radius, spread radius, color, and opacity. The resulting CSS string is applied directly to the preview element via inline styles, so you see a real-time rendering in your browser's layout engine - exactly what end users will see. When you copy the output, you get a production-ready CSS rule with no extra dependencies.
Yes, completely. The CSS Box Shadow Generator runs entirely in your browser using client-side JavaScript - no shadow values, settings, or any other data are ever sent to a server. The page requires no login, no account, and stores nothing beyond what your browser renders on screen. You can safely use it on private or sensitive design projects.
The CSS box-shadow property supports multiple comma-separated layers, allowing you to stack shadows for complex depth effects or glow outlines - check whether the generator supports multi-layer mode in its current version. One known limitation of box-shadow itself is that it follows the element's border-box shape; for non-rectangular shapes you typically need filter: drop-shadow() instead. Very large blur or spread values can also impact rendering performance on low-end devices, so keep values reasonable for production use.
CSS box-shadow has been supported without vendor prefixes in all major browsers - Chrome, Firefox, Safari, Edge, and Opera - since around 2012, giving it effectively 100% global browser support today. You do not need -webkit-box-shadow or -moz-box-shadow prefixes for any modern browser or device. The generator outputs clean, unprefixed CSS that is safe to paste directly into production stylesheets.
Browser DevTools let you tweak shadow values on an existing page element, but they require the site to already have a shadow applied and offer no dedicated shadow panel with labeled sliders. Figma and similar design tools generate shadow values but in their own format that must be manually translated to CSS. This generator gives you a purpose-built, copy-ready CSS output instantly without needing to open a full design application or a live codebase.