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Glassmorphism Generator

Build a frosted glass panel with backdrop blur, over a real background.

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A flat colour hides whether the effect works. Try it against the busy option.

Preview

Frosted panel Readable over anything?

Quick Tool Overview

The Glassmorphism Generator builds the frosted glass effect over a real background image, with the faint border and the saturation boost that separate convincing glass from a tinted rectangle.

What it does
Builds a frosted glass panel in CSS
You give it
Blur, transparency, border and saturation
You get back
The CSS, with the -webkit- prefix included
Best for
Overlay panels, modals and navigation bars
Developer Tools Free, unlimited use No sign-up Runs in your browser

About the Glassmorphism Generator

The frosted glass effect is a semi-transparent background, a backdrop-filter blur and a light border. Each part matters, and the preview here sits over a real image so you can see whether it actually works rather than judging it against a flat colour.

Two things decide whether it looks convincing. The border is the one people skip: a one-pixel white border at low opacity is what creates the edge a pane of glass has, and without it the panel looks like a tinted rectangle. The saturation boost is the other — real glass intensifies the colours behind it slightly, which backdrop-filter can reproduce with a saturate() alongside the blur. Both are exposed, with the -webkit- prefix included for Safari.

Key features of the Glassmorphism Generator

Previewed over a real image

A flat colour behind the panel hides whether the effect works. A photograph does not.

The border included

A faint light border is what creates the edge a pane of glass has, and it is the part people skip.

Saturation boost

Real glass intensifies the colours behind it slightly, which a saturate() alongside the blur reproduces.

Safari prefix included

Safari has supported backdrop-filter for years but only behind -webkit-, so omitting it silently disables the effect on iOS.

Honest about the cost

backdrop-filter blurs a live region every frame. One panel is fine; a dozen over a video is not, and the page says so.

How to use the Glassmorphism Generator

  1. 1

    Set the blur

    How much the background is diffused behind the panel.

  2. 2

    Set the transparency

    How much of the background colour shows through.

  3. 3

    Add the border

    A faint light border is what makes it read as glass rather than as a tint.

  4. 4

    Copy the CSS

    With the -webkit- prefix, which Safari still needs.

Frequently asked questions

Usually the background is opaque. backdrop-filter blurs what is behind the element, so the element needs a semi-transparent background for any of it to show through.

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