Glassmorphism Generator

Design frosted-glass cards with blur, transparency and border — copy the CSS.

About the Glassmorphism Generator

Design frosted-glass cards with blur, transparency and border — copy the CSS. Every value is computed locally with vanilla JavaScript — there is no server round-trip, no sign-up and no limit on how many times you use it.

How to use

Step 1

Set the blur

Adjust the backdrop blur to taste.

Step 2

Set transparency

Choose how see-through the surface should be.

Step 3

Preview the card

A frosted-glass panel updates live over a colorful background.

Step 4

Copy the CSS

Paste the generated styles onto your element.

Benefits

Modern frosted look

Create the popular glass effect without trial and error.

Tunable in real time

Dial in blur and opacity while watching the preview.

Copy-ready styles

Get vendor-prefixed CSS that works across browsers.

Features & supported formats

Features

Adjustable blur
Adjustable transparency
Live frosted preview
Vendor-prefixed output
Copy-ready CSS

Supported formats

CSS

Accuracy & limitations

The frosted effect relies on backdrop-filter and on having something varied behind it; both the browser support and the background matter more than the settings you choose here.

backdrop-filter is well supported in current browsers but not universal. Include a solid background fallback for older ones.
The effect only reads against a varied background. Over a flat color there is nothing to blur and the panel looks like plain transparency.
Heavy blur across large areas is expensive to render and can cost frame rate on lower-powered devices.
Text over a frosted panel has variable contrast because the backdrop changes. Check the worst case, not the average.

Frequently asked questions

Does backdrop-filter work everywhere?

It is supported in modern browsers; add a solid fallback background for older ones.

Why include -webkit-backdrop-filter?

Some browsers still need the prefixed property, so the tool includes it for wider support.

What background works best behind glass?

A colorful or image background makes the frosted effect most visible; flat backgrounds show little blur.

Is the effect expensive to render?

Heavy blur over large areas can cost performance, so use it on focused elements like cards and navbars.

Can I change the border?

The output includes a subtle light border; adjust it in your CSS to match your design.