Glassmorphism Generator

Give your UI that premium, modern feel. Adjust the blur, transparency, and outline to create the perfect frosted glass effect, then copy the CSS.

Glass Card

Drag the sliders to adjust the frosted glass effect.

/* Generated on cssgen.org */

The Rise of Frosted Glass UIs

We all want our applications to look like they belong in the latest macOS or iOS update. Coined as "Glassmorphism," this design trend emphasizes multi-layered approaches where UI elements appear as translucent frosted glass floating over a vibrant, colorful background.

The magic behind this effect is the backdrop-filter: blur() CSS property. Unlike standard filters that blur the element itself, backdrop-filter applies the effect to whatever is rendered behind the element. You can read the official technical documentation on MDN Web Docs.

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Pro Tips for Perfect Glass

The Subtle Border: The secret to making glass look like a physical object rather than a rendering error is the edge highlight. Always add a 1px solid border with a very low opacity (usually white at 0.2 opacity) to simulate light hitting the edge of the glass.
Background Vibrancy: Glassmorphism looks terrible on plain gray or white backgrounds. To make the blur visible, the background behind the card must be colorful, varied, or contain shapes/images.
Watch your Contrast: Because the background is bleeding through the card, reading text can become difficult. Ensure your typography has high contrast, and consider adding a very subtle drop shadow to your text if legibility suffers.

If this Glassmorphism builder saved you time today, the absolute best way to say thanks is by linking to us from your dev blog, agency site, or GitHub repository. Just copy the snippet below!

<a href="https://cssgen.org/glassmorphism" target="_blank" rel="noopener noreferrer">CSS Glassmorphism Generator</a>

Frequently Asked Questions

How does CSS Glassmorphism work?

Glassmorphism relies primarily on the CSS property backdrop-filter: blur(). When applied to an element with a semi-transparent background color, it dynamically blurs the elements positioned physically behind it on the screen, creating a frosted glass effect.

What is the browser support for backdrop-filter?

The backdrop-filter property has excellent modern browser support. However, for older browsers or systems where hardware acceleration is disabled, the blur will fail. It is highly recommended to provide a slightly more opaque background color as a fallback.

Why is my glass effect not blurring the background?

There are usually two culprits: either your element's background opacity is set too high (100% blocks the view completely), or there is nothing colorful or complex directly behind the element to actually blur. A solid white background won't show a blur effect.

Need a Vibrant Background?

As mentioned, Glassmorphism requires a beautiful background to function visually. Before you build your glass cards, head over to our Gradient Background Builder to create rich, colorful mesh gradients for your page body.