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Glassmorphism Generator – Background Blur & Transparency CSS

CSS Developer Tools CSS generator glassmorphism
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✨ Glassmorphism Generator

Create modern frosted glass UI effects with live CSS output

Settings
Alpha 0.25
10px
16px
Alpha 0.30
1px
Alpha 0.10
30px
4px

Frosted Glass

Background blur & transparency
create depth and elegance.

Frequently Asked Questions

Glassmorphism is a UI design trend that uses frosted glass effects achieved with background blur, semi-transparent backgrounds, borders, and subtle shadows. It creates a sense of depth and hierarchy while letting the background content show through.

The core is backdrop-filter: blur() combined with a semi-transparent background (rgba()), a subtle border, and border-radius. Add -webkit-backdrop-filter for Safari support.

backdrop-filter is supported in all modern browsers (Chrome, Edge, Firefox, Safari). For older browsers or IE, the effect degrades gracefully — the element still appears with semi-transparent background but without blur. Use @supports queries to provide fallbacks.

Background blur can be GPU-intensive, especially on mobile. Limit usage to key UI elements, avoid animating blur values, and test on low-end devices. Using will-change: backdrop-filter can help but should be used sparingly.

Yes, you can simulate it with a blurred background image or SVG filters, but those require more complex markup. The backdrop-filter is the simplest and most performant method.

Care must be taken with text contrast. Use a dark text color with a light semi-transparent background, or a light text color on a dark blurred area. Always check contrast ratios (WCAG AA requires 4.5:1 for normal text).

Neumorphism uses soft shadows and highlights to create an extruded look, while Glassmorphism relies on blur and transparency over colorful backgrounds. Glassmorphism feels lighter and is better suited for layered interfaces.
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