CSS Glassmorphism Generator

What is Glassmorphism?

Glassmorphism is a design trend that mimics frosted glass: a semi-transparent surface that blurs whatever is behind it, with a subtle light border to catch the edge. Popularized by modern operating systems, it creates a sense of depth and layering while keeping interfaces light and elegant.

Our CSS Glassmorphism Generator builds this effect using the backdrop-filter property for the blur, an adjustable transparency, rounded corners, and an optional border — all previewed over a vivid gradient so you can see the glass come to life.

How to Create the Effect

• Adjust the blur to control how frosted the glass appears
• Set transparency to balance see-through with legibility
• Tune the corner radius for soft, modern edges
• Toggle a subtle border to catch the light at the edges
• Copy the CSS, including the -webkit- prefix for Safari

The backdrop-filter Property

The magic of glassmorphism is the backdrop-filter property, which applies a filter — here, a blur — to the area behind an element rather than the element itself. This is what makes content behind the glass appear frosted. It requires a semi-transparent background to be visible.

Because Safari needs the -webkit-backdrop-filter prefix, this tool includes it automatically so your effect works across browsers. Note that the effect only shows when there is content or color behind the element to blur.

Designing with Glassmorphism

Glassmorphism works best over colorful or image backgrounds, where the blur has something interesting to reveal. It is popular for cards, navigation bars, modals, and login forms. Keep text contrast high enough to remain readable over the blurred, semi-transparent surface. This tool generates the effect entirely in your browser.