Glassmorphism Generator

What this tool does

Glassmorphism Generator builds the popular frosted-glass UI effect, a translucent, blurred backdrop-filter card with a subtle tinted border, previewed live over a colourful background so the effect reads clearly, with the ready-to-use CSS (including the Safari -webkit- prefix) to copy.

The glassmorphism "frosted glass" effect, popularised across modern UI design, is a translucent panel that blurs whatever sits behind it, getting the blur amount, tint opacity and border balance right is fiddly without seeing it over a realistic busy background.

This tool builds the effect with adjustable blur, background tint, border opacity and corner radius, previewed directly over a colourful gradient background so you can judge the effect the way it would actually look in a real interface.

How to use Glassmorphism Generator

1. Adjust the blur amount to control how much the background behind the card is blurred.
2. Set the background and border opacity for the glass tint.
3. Adjust the corner radius.
4. Copy the generated CSS.

Tips for better results

• The glassmorphism effect specifically needs something visually busy or colourful behind it to read clearly, over a plain solid background, a blurred, translucent card looks nearly identical to a plain translucent one.
• A subtle, semi-transparent border (slightly brighter than the glass fill) helps sell the "glass edge" look, since real glass catches light differently at its edges.
• Safari requires the -webkit-backdrop-filter prefixed property alongside the standard backdrop-filter, this tool includes both automatically in the output.
• Overly high blur values can make the background behind the card unrecognisable, which sometimes defeats the purpose of a glass effect (letting content show through); moderate blur (8-16px) often reads more convincingly as "glass."

Common use cases

• Adding a modern frosted-glass card, modal, or navigation bar effect to a UI design.
• Creating a translucent overlay panel that lets a background image or gradient show through softly.
• Prototyping a glassmorphism design trend element before implementing it in a real codebase.
• Learning how backdrop-filter and translucent backgrounds combine to create the glass effect.

Common mistakes to avoid

• Testing the effect over a plain solid-colour background and concluding it doesn’t look right, glassmorphism specifically needs a busy or colourful background behind it to read as "glass" rather than just a plain translucent box.
• Forgetting the -webkit- prefixed backdrop-filter property for Safari support, which this tool includes automatically, but is easy to omit when hand-writing the CSS yourself.
• Using too much blur, which can obscure the background behind the card so much that the "glass" effect loses its visual point of letting content show through softly.