CSS Glassmorphism Generator

Generate frosted-glass CSS with translucent tint, backdrop blur, saturation, border, radius, and shadow controls.

Last updated: August 2026 | By Workshelve Team

Generated glassmorphism CSS will appear here.
Glass preview
Backdrop blur needs content behind it.

What Glassmorphism Uses

Glassmorphism combines translucent backgrounds, backdrop blur, a subtle border, and depth shadow to create a frosted surface. The effect only reads as glass when there is visible color, image, or gradient content behind the element.

This generator emits both backdrop-filter and -webkit-backdrop-filter because Safari still commonly needs the prefixed property. Opacity values stay explicit so the tint, border, and shadow can be tuned separately.

It is one-way because the final effect depends on backdrop content, browser support, stacking context, transparency, and inherited layout styles.

How the Glass CSS Is Built

1. Opacity, blur, saturation, radius, and shadow values are parsed with parseFloat.
2. Opacity values must stay between 0 and 1.
3. Blur, saturation, and radius must be zero or positive; saturation is not capped at 300% by CSS.
4. backdrop-filter combines blur() and saturate() so background detail stays soft but colorful.
rgba(255, 255, 255, 0.18)
Translucent tint layer
blur(16px)
Frosted backdrop effect
saturate(140%)
Keeps colors vivid through blur
border opacity 0.28
Thin reflective edge

Worked Example: Frosted Panel

Create a reusable frosted panel over a colorful page background:

Tint
background: rgba(255, 255, 255, 0.18);
Filter
backdrop-filter: blur(16px) saturate(140%);
Result

The background remains visible but softened, while the border and shadow define the panel edge.

CSS Glassmorphism FAQ

Why do I need content behind the glass?

backdrop-filter blurs pixels behind the element. On a flat plain background, the effect has little visible detail to blur.

Can opacity values be negative?

This generator requires tint, border, and shadow alpha values from 0 to 1 so the entered value matches the emitted rgba() alpha directly.

Can blur be zero?

Yes. Zero blur is valid, but it removes the frosted look and leaves only transparency, border, and shadow.

Can saturation be above 300%?

Yes. CSS saturate() accepts non-negative percentages above 300%. Very large values can look extreme, but this generator does not impose an arbitrary 300% ceiling.

Why include -webkit-backdrop-filter?

Safari support commonly relies on the prefixed property, so including both improves real-world coverage.

Does glassmorphism work in every browser?

Most modern browsers support backdrop-filter, but support and performance can vary, especially on older devices.

Why use a border?

A translucent border gives the surface a visible edge, which helps the glass panel separate from busy backdrops.

Can glass effects hurt readability?

Yes. If the tint opacity is too low or the backdrop is too busy, text contrast can suffer. Test with the real background.

Why is this not bidirectional?

The visible effect depends on browser support, backdrop content, stacking, and inherited styles, so parsing CSS alone cannot recover the full design intent.

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