CSS Glassmorphism Generator
Build CSS glassmorphism (frosted glass) card effect with live preview and code
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About CSS Glassmorphism Generator
Create Stunning Glass Effects With the CSS Glassmorphism Generator
Glassmorphism has become one of the defining design trends of the 2020s. That frosted glass look - where UI elements appear translucent with a soft blur showing content behind them - has taken over everything from Apple's macOS and iOS interfaces to banking apps and SaaS dashboards. The CSS glassmorphism generator lets you craft that exact effect visually and export production-ready CSS code, no guesswork required.
What Is Glassmorphism, Technically?
At its core, glassmorphism combines four CSS properties to create the illusion of frosted glass. Background with transparency - typically a semi-transparent white or coloured background using rgba or hsla values. Backdrop-filter: blur() - this is the star of the show, applying a Gaussian blur to whatever sits behind the element. Border - a subtle semi-transparent border (often white at low opacity) creates the glass edge effect. Box-shadow - a soft shadow adds depth, making the glass element appear to float above the content beneath it.
Getting these four properties balanced just right is the challenge. Too much blur and the element looks opaque. Too little and the glass effect disappears. The wrong background opacity makes text unreadable. The CSS glassmorphism generator gives you real-time visual controls for every parameter, with a live preview showing exactly how the effect looks against different backgrounds.
Why Glassmorphism Works So Well in Modern Design
The reason glassmorphism has been adopted so widely is that it solves a real design problem: layering content without losing context. When a modal, card, or navigation element uses a glassmorphism effect, users can still perceive the content behind it. This creates a sense of depth and spatial hierarchy that flat design struggles to achieve. The user intuitively understands that the glass element is "in front of" other content, which makes the interface feel more three-dimensional and physical.
It also pairs beautifully with gradient backgrounds, hero images, and dynamic content. A glass card floating over a colourful gradient background creates visual interest that a solid white card simply cannot match. This is why so many landing pages and portfolio sites have adopted the aesthetic.
Customisation Options in This Generator
The CSS glassmorphism generator provides granular control over every aspect of the effect:
Blur intensity - from a barely perceptible 1px to a heavily frosted 40px+. Higher values create a more opaque, milky glass effect. Lower values allow more background detail to show through.
Background opacity - controls how much of the element's own background colour shows versus the blurred content behind it. A common starting point is rgba(255, 255, 255, 0.15) for a subtle glass tint.
Border opacity and width - the semi-transparent border is crucial for selling the glass illusion. It catches "light" along the edges, just like real frosted glass would. Adjusting the opacity lets you make this edge effect more or less prominent.
Shadow depth and spread - the box-shadow creates the floating effect. Heavier shadows push the element visually further from the background. Lighter shadows create a more subtle lift.
Border radius - because glass effects look best on rounded elements, the generator includes radius controls so you can shape your glass element without switching to a separate tool.
Browser Support Considerations
The backdrop-filter property - the essential ingredient - is supported in all modern browsers including Chrome, Firefox (since version 103), Safari, and Edge. The only notable holdout was Firefox prior to version 103, which required a flag to enable it. For production use in 2026, browser support is effectively universal. The generator includes the -webkit-backdrop-filter prefix for Safari compatibility, ensuring the CSS works everywhere.
Copy, Paste, Ship
Once you've fine-tuned your glassmorphism effect, the generator outputs clean CSS that you can paste directly into your stylesheet. Everything runs in your browser - no server processing, no account required. Whether you're designing a login card, a navigation bar, a pricing table, or a modal overlay, this CSS glassmorphism generator gets you from concept to code in seconds rather than minutes of manual CSS experimentation.