Design frosted glass effects with blur, transparency, and borders — copy clean CSS instantly.
Welcome to the Free Online CSS Glassmorphism Generator by KnowAdvance — the ultimate tool for creating beautiful, frosted glass effects using pure CSS. With this easy-to-use online generator, you can design transparent, blurred, and elegant glass-like UI components for your website or app without manually adjusting complex CSS properties. Simply customize background blur, transparency, border, and color overlays, and copy your ready-to-use CSS instantly.
Glassmorphism is one of the most modern design trends that gives your UI a stylish, translucent, and futuristic appearance — inspired by real-world frosted glass surfaces. It combines soft transparency, blur, and subtle highlights to create depth and realism in modern digital interfaces.
Glassmorphism is a design style that uses transparency, blur, and layered colors to create the illusion of a frosted glass surface. It’s often used in modern operating systems and applications — such as Windows 11, macOS Big Sur, and iOS — to give depth to interfaces and make them visually appealing while maintaining readability.
In CSS, glassmorphism is typically achieved using a combination of:
backdrop-filter property adds a soft blur to the background behind the element.The result is a clean, light, and immersive aesthetic that works perfectly for both light and dark user interfaces.
Manually crafting glassmorphic effects in CSS requires a perfect balance between blur, transparency, and background contrast. Even a slight mismatch in color or opacity can make your design appear dull or unreadable. That’s where our Free Online Glassmorphism Generator comes in handy — it gives you full visual control, generates optimized CSS instantly, and helps you preview results in real-time.
backdrop-filter.Glassmorphism works by blending transparency with background blur. When a semi-transparent layer is placed over a colorful or patterned background, it creates the illusion of frosted or translucent glass. The blurred background provides depth, while the semi-transparent layer ensures readability and focus on the content.
Here’s the basic CSS structure for a glassmorphic element:
background: rgba(255, 255, 255, 0.15);
backdrop-filter: blur(10px);
border: 1px solid rgba(255, 255, 255, 0.2);
border-radius: 12px;
This code produces a subtle frosted glass card effect that you can enhance by adding gradients, shadows, or color overlays using the generator.
Follow these simple steps to design your perfect glassmorphic UI element using our generator:
Your generated code is fully compatible with modern web browsers and can be integrated instantly into any design system, dashboard, or personal website.
Glassmorphism has become a go-to design style for modern UIs. Here are a few popular applications:
There are many reasons why designers and developers love glassmorphism:
Although both are modern design trends, Glassmorphism and Neumorphism serve different purposes:
Designers often mix both to create hybrid, visually stunning user interfaces that feel both tangible and elegant.
Here are some professional tips to make your glassmorphic designs look their best:
.glass-card {
background: rgba(255, 255, 255, 0.1);
border-radius: 16px;
backdrop-filter: blur(10px);
-webkit-backdrop-filter: blur(10px);
border: 1px solid rgba(255, 255, 255, 0.2);
box-shadow: 0 4px 30px rgba(0, 0, 0, 0.1);
}
This CSS snippet creates a clean frosted glass card that you can customize using our generator for different transparency levels or gradient backgrounds.
Glassmorphism also works beautifully in dark themes. Instead of white transparency, dark glass surfaces use semi-transparent black backgrounds with lighter borders.
.glass-dark {
background: rgba(0, 0, 0, 0.3);
backdrop-filter: blur(15px);
border: 1px solid rgba(255, 255, 255, 0.1);
}
Our generator allows you to preview both light and dark variations to ensure your design looks perfect in any mode.
The generated glassmorphism CSS works seamlessly on all modern browsers that support backdrop-filter, including:
For unsupported browsers, our generator includes fallback color options to ensure graceful degradation.
Although CSS Glassmorphism is lightweight, it’s important to optimize for performance, especially in dynamic UIs:
Our Glassmorphism Generator creates CSS that’s fully responsive. You can use relative units like em or rem for border radius and shadows, ensuring your frosted elements scale perfectly across all screen sizes. The transparency and blur effects also adapt naturally to mobile and tablet displays.
And just like that — you’ll have a professional, frosted glass effect running on your website in seconds.
To make your glassmorphism effect pop, use backgrounds that contrast with your glass layer:
The Free Online CSS Glassmorphism Generator by KnowAdvance makes it incredibly easy to create modern, elegant, and professional glass effects for your websites and web apps. It eliminates the need for manual CSS coding and allows you to experiment with different visual styles in seconds.
Whether you’re designing a portfolio, landing page, or dashboard, this generator empowers you to bring the sleek, transparent beauty of glassmorphism into your projects. Try it now and give your designs that premium, futuristic look users love!