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HomeToolsColor & DesignFree CSS Glassmorphism Generator

Part of Color & CSS

Color & DesignCSS

Free CSS Glassmorphism Generator

Design modern frosted glass UI components with live backdrop previews, blur and saturation controls, 20+ curated presets (Apple Vision, Neon Glow, Dark Obsidian), and Tailwind export.

TA
Tanbir Ahamed·Founder of ToolWise · Software Engineer
Published July 2026

Interactive Tool Workspace

Component Mode:

Frosted Glass Canvas

Backdrop:
Glass UI #2026

VisionOS Glassmorphism

Optical refraction with multi-layer background blur and edge luminance highlights.

Curated Glass Presets (17)

Optical Refraction

16px
180%
15%

Border & Elevation

24px
35%
32px

Generated Glassmorphism Code

.glass-card {
  background: rgba(255, 255, 255, 0.15);
  backdrop-filter: blur(16px) saturate(180%);
  -webkit-backdrop-filter: blur(16px) saturate(180%);
  border: 1px solid rgba(255, 255, 255, 0.35);
  border-radius: 24px;
  box-shadow: inset 0 1px 1px 0 rgba(255, 255, 255, 0.45), 0px 8px 32px -4px rgba(0, 0, 0, 0.25);
}

How to Use

  1. 1Pick a curated preset (Apple Vision, Neon Cyan, Dark Obsidian, Lavender Mist).
  2. 2Choose a backdrop theme or test against colorful vibrant gradients.
  3. 3Adjust the blur radius, saturation boost, and background opacity sliders.
  4. 4Fine-tune border width, border opacity, and inner highlight glow.
  5. 5Switch between interactive component mockups (Card, Music Player, Profile).
  6. 6Copy the generated CSS, Tailwind classes, or React inline style.

Features

  • ✓Full optical glass engine (Blur 0–60px, Saturation 100–300%, Opacity 0–100%)
  • ✓20+ curated glass presets across 5 themes (Frost, Neon, Dark, Pastel, Cyber)
  • ✓8+ vibrant gradient backdrop environments
  • ✓3 interactive component previews (SaaS Card, Glass Music Player, Profile Badge)
  • ✓Inner 1px edge highlight glow toggle
  • ✓🎲 One-click Random Glass effect generator
  • ✓CSS with -webkit-backdrop-filter, Tailwind CSS, and React component export
Comprehensive Guide & Reference

The Definitive Guide to CSS Glassmorphism & Frosted UI

Learn the optical secrets of VisionOS and iOS blur effects, GPU performance optimization, and cross-browser support.

1. The 4 Layers of Realistic Glass

  • Translucent Surface: A low-opacity background tint (typically rgba(255, 255, 255, 0.15)) that allows light to pass through.
  • Optical Refraction (Blur): The backdrop-filter: blur(16px) that diffuses background shapes into a silky texture.
  • Specular Edge Highlight: A 1px border or inset 0 1px 1px glow representing reflected light along the top glass edge.
  • Diffused Ambient Shadow: A broad, low-opacity drop-shadow that elevates the glass sheet away from the backdrop.

2. Browser Compatibility & Safari WebKit

Always specify both backdrop-filter and -webkit-backdrop-filter. Without the vendor prefix, Safari on iOS and macOS will render an opaque or glitchy surface.

Real example

Worked example: a frosted-glass card

Input
Backdrop blur: 16px · Background: rgba(255,255,255,0.25) · Border: 1px white at 30%
Output
→backdrop-filter: blur(16px); background: rgba(255, 255, 255, 0.25); border: 1px solid rgba(255, 255, 255, 0.3);

The effect needs something colorful behind the card — on a flat white page, blur(16px) has nothing to diffuse and looks like nothing at all.

Privacy & data handling

This tool runs entirely in your browser. What you enter is processed on your own device using JavaScript and WebAssembly — it is not uploaded to our servers, and there is no account, no signup and no per-use limit. Read our privacy policy.

Frequently Asked Questions

What CSS properties create the frosted glass (glassmorphism) effect?
The essential properties are backdrop-filter: blur(16px) saturate(180%) for the frosted diffusion, a semi-transparent background (background: rgba(255, 255, 255, 0.15)), a semi-transparent bright border, and soft drop-shadows with an optional inset 1px highlight.
Is -webkit-backdrop-filter required for Safari iOS support?
Yes! Safari on iOS and macOS requires the vendor prefix -webkit-backdrop-filter to properly render background blur without rendering black or opaque gray boxes. Our generator includes this by default.
How can I optimize glassmorphism performance on mobile devices?
Keep the blur radius between 12px and 24px. Extremely high blur values (40px+) across multiple nested containers can trigger GPU redraw lag on low-power mobile GPUs.
How do I create fallback styles for older browsers without backdrop-filter support?
Use CSS @supports: `@supports not ((-webkit-backdrop-filter: none) or (backdrop-filter: none))` to declare a higher opacity solid or semi-opaque fallback background (such as rgba(255, 255, 255, 0.85)).
Can I use glassmorphism effects in Tailwind CSS projects?
Yes! In Tailwind CSS, you can combine classes like `backdrop-blur-md bg-white/20 border border-white/30 shadow-lg` to create identical glass effects without writing manual CSS.
Why is an inner white highlight border important in glassmorphism?
Real glass catches ambient light along its physical edges. Adding a subtle 1px border with 20-40% white opacity or an inset box-shadow creates that authentic optical rim-lighting effect.

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