Glassmorphism Generator

Generate CSS glassmorphism effects with live preview. Adjust blur, transparency, border, and color. Copy ready-to-use CSS code.

Glass Properties

Blur12px

Transparency25%

Saturation120%

Border Opacity30%

Border Radius16px

Glass Color

#ffffff

Box shadow

Preview Background

Glass Card

Glassmorphism effect

This is a preview of your glassmorphism CSS. Adjust the sliders to customize the blur, transparency, and other properties.

Action

Cancel

CSS Code

background: rgba(255, 255, 255, 0.25);
backdrop-filter: blur(12px) saturate(120%);
-webkit-backdrop-filter: blur(12px) saturate(120%);
border-radius: 16px;
border: 1px solid rgba(255, 255, 255, 0.3);
box-shadow: 0 8px 32px 0 rgba(31, 38, 135, 0.37);

Browser support: backdrop-filter is supported in 96%+ of browsers. Add the -webkit- prefix for Safari. Use @supports for fallback styling.

How to Use Glassmorphism Generator

1Adjust blur, transparency, and color sliders.
2See the glassmorphism effect update in real time.
3Customize border, border radius, and background.
4Copy the generated CSS code for your project.

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Frequently Asked Questions

What is glassmorphism?▾

Glassmorphism is a UI design trend that creates a frosted glass effect using CSS backdrop-filter. Key characteristics: semi-transparent background, blur applied to content behind the element, subtle border (often white/translucent), and a soft shadow. It was popularized by Apple (macOS Big Sur, iOS 15), Microsoft (Fluent Design), and is widely used in modern dashboards, cards, and overlays.

How does backdrop-filter: blur() work?▾

The CSS backdrop-filter property applies graphical effects to the area behind an element. blur() creates a Gaussian blur effect on the content visible through the semi-transparent element. The browser composites the blurred background with the element's own background color (which must be semi-transparent for the effect to show). Higher blur values create a more frosted appearance. Typical values: 4-20px for subtle to heavy frosting.

What browsers support glassmorphism?▾

backdrop-filter is supported in Chrome 76+, Safari 9+ (with -webkit- prefix), Firefox 103+, Edge 79+, and all modern mobile browsers. Global support is ~96% as of 2026. For the remaining ~4%, provide a fallback: use a solid semi-transparent background color that looks acceptable without the blur. The @supports rule can detect backdrop-filter availability.

How do I make glassmorphism accessible?▾

Key accessibility considerations: ensure text has sufficient contrast against both the glass element and varying backgrounds behind it (WCAG 2.1 AA requires 4.5:1 for normal text). Test with different background images and colors. Use a slightly higher background opacity (0.3-0.5) if contrast is an issue. Add a subtle border to define element boundaries. Consider prefers-reduced-transparency media query for users who disable transparency effects.

Does glassmorphism affect performance?▾

backdrop-filter: blur() triggers GPU compositing and can be expensive on large areas, low-end devices, or when many glass elements overlap. Best practices: limit blur radius (10-20px is sufficient), avoid animating blur values, minimize the number of overlapping glass elements, use will-change: backdrop-filter for anticipated animations, and test on mobile devices. On modern hardware, a few glass cards are fine; full-page glass overlays can cause frame drops.

Can I animate glassmorphism effects?▾

Yes, but with caution. You can animate opacity, background-color, and transform on glass elements smoothly. Animating the blur() value itself is expensive and can cause jank. A better approach: animate opacity from 0 to 1 on the glass element to create a fade-in effect, or use transform: scale() for a grow-in. CSS transitions work well for hover states on glass cards.

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