Glassmorphism CSS Generator

Generate the glassmorphism / frosted-glass CSS effect with backdrop-filter: blur(), semi-transparent background, subtle border, and soft shadow. Live preview on a gradient backdrop so you can actually see how the effect lands.

Glass card

How to use the Glassmorphism CSS Generator

Adjust the sliders; the preview updates live on a gradient backdrop. Blur is the dominant effect — 8-16px is the sweet spot for most uses. Higher saturation makes the backdrop's colors pop through; lower mutes them. Add a thin light-colored border for a more pronounced glass edge.

Browser support and fallbacks

backdrop-filter works in all modern browsers (Chrome 76+, Safari 9+, Firefox 103+). Where unsupported, the effect degrades gracefully to a plain semi-transparent background — readable, just not blurred. The performance hit of backdrop-filter is small for one or two elements; avoid stacking many on the same page.

Frequently asked questions

Why is the frosted-glass effect not showing?
The blur comes from backdrop-filter, which needs content behind the element to blur and a semi-transparent background. Over a solid color with nothing behind it, there is nothing to frost.

Do I need vendor prefixes?
Safari still needs -webkit-backdrop-filter alongside the standard property. The generated CSS includes both so the effect works across browsers.

Does backdrop-filter affect performance?
It is GPU-accelerated but can be costly across many elements or large areas. Use it on the few elements where the effect matters rather than site-wide.
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