Glassmorphism Generator
Create stunning frosted glass UI effects for modern web and app interfaces. Customize blur, transparency, colors, and borders — see changes instantly, copy CSS in one click.
🎛 Glass Settings
🎨 Quick Presets
Glass Card
This is how your glassmorphism effect looks. The background shows through with blur and transparency.
📋 CSS Code
/* Generate a glass effect to see CSS */
Perfect For These UI Elements
Navigation Bars
Floating navbar that blurs content underneath while scrolling
Modals & Cards
Overlay dialogs that feel lightweight and modern
Sidebars
Contextual menus that overlay content gracefully
Hero Headers
Eye-catching section headers with depth
What is Glassmorphism?
Glassmorphism is a modern UI design trend characterized by transparency, blur effects, and floating layers that create a sense of depth. The term gained popularity in 2020 when Apple introduced macOS Big Sur and iOS 14, which featured extensive use of frosted glass effects.
The effect mimics real-world frosted glass — semi-transparent surfaces that blur and distort whatever appears behind them. This creates hierarchy, depth, and a premium feel in digital interfaces.
Core Principles of Glassmorphism
Transparency
Use rgba() colors with alpha values between 0.1 and 0.4. Too opaque loses the effect; too transparent becomes invisible.
Background Blur
The backdrop-filter: blur() property is essential. Values between 5px and 40px work best depending on context.
Multi-layered Backgrounds
Glassmorphism needs colorful, varied backgrounds to show off the effect. Flat colors don't work.
Subtle Borders
Thin, semi-transparent borders (often white or matching the tint) define edges without breaking the illusion.
Soft Shadows
Large, diffuse shadows create the floating effect. Avoid harsh, dark shadows.
Color Saturation
Background colors show through saturated. Use backdrop-filter: saturate() to control this.
Browser Support & Fallbacks
Glassmorphism relies on backdrop-filter, which has excellent modern browser support but requires fallbacks:
Progressive Enhancement Approach
.glass {
/* Solid fallback for older browsers */
background: rgba(255, 255, 255, 0.9);
/* Modern glass effect */
@supports (backdrop-filter: blur(10px)) {
background: rgba(255, 255, 255, 0.2);
backdrop-filter: blur(10px) saturate(180%);
}
}
Accessibility Considerations
Glassmorphism can create readability issues. Ensure sufficient contrast:
- Test with WCAG contrast checker — text should be 4.5:1 minimum
- Avoid placing light glass over light backgrounds
- Consider adding a subtle text-shadow for readability
- Don't use glass effects for critical UI elements alone
- Respect prefers-reduced-motion for animated backgrounds
Performance Optimization
Backdrop-filter is GPU-intensive. Optimize for smooth performance:
- Limit blur radius — higher values cost more performance
- Avoid animating the blur value directly
- Use will-change: transform on animated elements
- Consider disabling on mobile for better battery life
- Don't stack multiple glass elements with high blur
Frequently Asked Questions
Does this work on all browsers?
Backdrop-filter works in all modern browsers (Chrome, Firefox, Safari, Edge). Internet Explorer and very old browsers will show a solid fallback color instead.
Why doesn't it work on my website?
Common issues: 1) No colorful background behind the element, 2) Missing vendor prefixes for older Safari, 3) Parent element has overflow:hidden or opacity that breaks the effect, 4) Testing on a local file instead of server.
Is glassmorphism accessible?
It can be if done carefully. Always check contrast ratios, provide solid fallbacks for reduced-motion preferences, and don't rely on glass effects alone for UI affordances.
Can I use this commercially?
Absolutely! The CSS we generate is yours to use in any project — personal, commercial, open source, whatever you need.
Design Your First Glass Element
Adjust the sliders above to create your perfect glassmorphism effect. Copy the CSS and use it in your next project.
