CSS Glassmorphism Generator Free Online Tool 2026

Last updated March 22, 2026

Glassmorphism Design Tips

• Works best over colorful, high-contrast backgrounds — gradients or photos
• Invisible against plain white or black backgrounds
• Keep background opacity between 10–30% for the best glass effect
• Blur radius of 10–20px creates a strong frosted effect; 4–8px is more subtle
• Always include a subtle border (rgba white, 0.2–0.4 opacity) for definition
• Test text readability — adjust opacity if text is hard to read
• Include -webkit-backdrop-filter for Safari compatibility
• Use @supports to provide a solid fallback for unsupported browsers

The CSS Glassmorphism Generator on TechConverter.me provides a visual interface with a colorful background preview so you can see the effect in context. Adjust blur, opacity, and border values, then copy the generated CSS with all vendor prefixes and fallbacks included.

/* Glassmorphism card — light variant */
.glass-card {
  background: rgba(255, 255, 255, 0.15);
  backdrop-filter: blur(12px) saturate(1.5);
  -webkit-backdrop-filter: blur(12px) saturate(1.5);
  border: 1px solid rgba(255, 255, 255, 0.25);
  border-radius: 16px;
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.1);
  padding: 2rem;
}

/* Glassmorphism card — dark variant */
.glass-card-dark {
  background: rgba(0, 0, 0, 0.25);
  backdrop-filter: blur(12px) saturate(1.5);
  -webkit-backdrop-filter: blur(12px) saturate(1.5);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 16px;
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
  padding: 2rem;
  color: #ffffff;
}

/* Sticky nav with glass effect */
.glass-nav {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255, 255, 255, 0.7);
  backdrop-filter: blur(20px) saturate(1.8);
  -webkit-backdrop-filter: blur(20px) saturate(1.8);
  border-bottom: 1px solid rgba(255, 255, 255, 0.3);
  box-shadow: 0 1px 0 rgba(0, 0, 0, 0.05);
  padding: 0 2rem;
  height: 64px;
  display: flex;
  align-items: center;
}

/* Dark mode nav */
@media (prefers-color-scheme: dark) {
  .glass-nav {
    background: rgba(15, 15, 25, 0.7);
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  }
}

/* Modal overlay */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.4);
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
}

/* Glass modal */
.glass-modal {
  background: rgba(255, 255, 255, 0.2);
  backdrop-filter: blur(24px) saturate(2);
  -webkit-backdrop-filter: blur(24px) saturate(2);
  border: 1px solid rgba(255, 255, 255, 0.35);
  border-radius: 20px;
  box-shadow:
    0 20px 60px rgba(0, 0, 0, 0.2),
    inset 0 1px 0 rgba(255, 255, 255, 0.4);
  padding: 2.5rem;
  max-width: 480px;
  width: 90%;
}