Free & Private Online Browser Utility

Glassmorphism CSS Generator: Frosted Glass

Design modern frosted glass UI components with real-time backdrop blur, surface translucency, and edge light refraction. The generator computes cross-browser CSS including standard and WebKit vendor-prefixed backdrop-filter properties, dynamic border alpha blending, saturation enhancements, and Tailwind utility classes entirely inside your local browser session.

How to use

  1. Step 1: Adjust Blur & Opacity

    Set backdrop-filter blur intensity in pixels, surface fill opacity percentage, and color saturation levels.

  2. Step 2: Configure Border & Shadow

    Fine-tune border alpha opacity, corner radius, and subtle specular elevation drop shadows.

  3. Step 3: Copy CSS or Tailwind Code

    Copy clean CSS declarations including vendor prefixes or formatted Tailwind utility classes.

Options explained

Backdrop Blur & Saturation

Controls backdrop-filter blur radius and color saturation boosting to simulate thick optical glass.

When to use: Use to establish readable foreground content layered over colorful, busy page backgrounds.

Specular Border Refraction

Applies semi-transparent border highlighting (1px solid rgba(255,255,255,alpha)) to simulate glass bevels.

When to use: Use to define clear visual boundaries for floating cards and navigation bars.

Preset Glass Styles

Provides pre-calibrated configurations for macOS Control Center, Windows 11 Fluent, and Dark Obsidian Glass.

When to use: Use for rapid UI prototyping and consistent desktop design language alignment.

Worked example

Input: Frosted glass card with 16px blur and 25% white opacity

Output: background: rgba(255, 255, 255, 0.25); backdrop-filter: blur(16px) saturate(150%); border-radius: 24px; border: 1px solid rgba(255, 255, 255, 0.3);

Includes -webkit-backdrop-filter prefix for Safari and iOS WebKit compatibility.

Tips & limits

  • Glassmorphism relies on high-contrast backgrounds; layer glass cards over gradients or imagery for maximum visual effect.
  • A subtle 1px white border with 0.2 to 0.3 alpha mimics real glass edge reflections.
  • Bumping backdrop-filter saturation to 140% or 180% keeps underlying colors vivid through the frosted surface.

Common problems

Backdrop blur does not render on Safari iOS

The generated code includes -webkit-backdrop-filter automatically to ensure full Safari compatibility.

Text inside glass card is difficult to read

Increase surface opacity above 30% or boost backdrop blur beyond 20px to diffuse background details.

Frequently Asked Questions (FAQ)

What browser requirements exist for backdrop-filter glassmorphism?

Backdrop-filter is supported in modern versions of Chrome, Safari, Firefox, and Edge. Vendor prefixes (-webkit-) ensure cross-platform consistency.

How does saturation affect the frosted glass effect?

Heavy blurring can wash out underlying colors; increasing saturation counteracts blur desaturation and makes elements pop.

Does this tool transmit UI designs to any server?

No. All canvas rendering, CSS generation, and color calculations run client-side in browser RAM.

Files never leave your device; calculations and transformations happen locally.

Last reviewed: 2026-10-19 · Build: deb3bc0