What is the Glassmorphism Generator?
Generate frosted-glass CSS effects using backdrop-filter and background transparency. Preview against coloured backgrounds and copy the complete ruleset.
Everything runs locally in your browser. Adjust the controls above, preview instantly, and copy clean, production-ready CSS — no account, no upload.
Using the Glassmorphism Generator
Everything lives in the panel at the top of this page. There is nothing to install — it all runs right here in your browser.
Set blur and background opacity
Adjust backdrop-filter blur (8-24px is typical) and the background-color alpha (0.1-0.25 for light glass). Higher blur needs less background opacity.
Add border and shadow
A subtle white border (rgba(255,255,255,0.2)) and a soft box-shadow complete the frosted-glass look.
Preview and copy
Toggle between different background colours to verify the effect works. Click Copy to grab the full CSS ruleset.
What the generated code looks like
Clean, production-ready CSS — no vendor bloat, no unnecessary declarations.
.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, 0.2);
border-radius: 16px;
box-shadow: 0 8px 32px rgba(0, 0, 0, 0.1);
}
/* Dark glass variant */
.glass-dark {
background: rgba(0, 0, 0, 0.2);
backdrop-filter: blur(20px);
-webkit-backdrop-filter: blur(20px);
border: 1px solid rgba(255, 255, 255, 0.08);
}Glassmorphism only looks correct on colourful or image backgrounds. It looks broken on plain white or grey backgrounds.
Pro tips for better results
backdrop-filter only works on elements with a transparent background
The background-color must have transparency (rgba with alpha less than 1) for backdrop-filter to be visible. A fully opaque background blocks the effect.
Always include -webkit-backdrop-filter
Safari requires the -webkit- prefix for backdrop-filter. Include both -webkit-backdrop-filter and backdrop-filter for full coverage.
Glassmorphism requires a colourful background
The effect looks broken on white or single-colour backgrounds. It works on photographs, gradients, and multi-layer designs.
Blur values above 24px can impact performance
backdrop-filter is GPU-intensive. High blur values on large elements can cause dropped frames on mobile devices. Test on mid-range hardware before shipping.
Frequently asked questions
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