Free Online CSS Glassmorphism Generator
Create frosted-glass CSS with blur, transparency, and border controls.
A translucent surface, a soft blur, and a bright edge. Place it over color and let the background glow through.
The card uses a translucent background plus backdrop-filter. Keep a solid fallback
background for browsers or email clients that do not support the blur effect.
About the CSS Glassmorphism Generator
Glassmorphism is a visual style built on transparency, blur, and light borders. The effect looks like a frosted pane of glass floating above a colorful background. It is popular in dashboards, music players, login screens, mobile apps, and modern landing pages because it adds depth without heavy imagery.
This generator gives you direct control over the three ingredients that make the effect convincing. The blur slider controls how strongly the background is diffused behind the card. The transparency slider sets how much of the background shows through the glass tint. The border opacity and border width sliders create the thin highlight that makes the glass edge feel physical. Radius and shadow are also adjustable, so the same recipe can produce a tight pill, a soft rounded panel, or a floating modal.
Getting a convincing glass effect
- Start with a colorful background. Glass is only visible when there is something behind it to blur.
- Keep the tint light. A white tint between 30% and 60% opacity usually works best on photos and gradients.
- Use a subtle border. A one-pixel border at around 40% white looks like reflected light.
- Do not over-blur. A blur between 10 and 24 pixels keeps text readable while still softening the backdrop.
- Add a fallback color. If
backdrop-filteris unavailable, the translucent background still needs enough contrast for text.
How to use the generator
- Adjust blur, transparency, border, radius, and shadow until the preview looks right.
- Choose a glass tint that matches your brand or the background image.
- Check the generated CSS and copy it into your stylesheet.
- Test the result over the lightest and darkest parts of your real background.
Frequently asked questions
Why does the blur not show in some browsers?
Older browsers and some email clients do not support backdrop-filter. The card still renders with its translucent background, so always set a readable fallback color and test in your target browsers.
Does glassmorphism hurt performance?
Large blurred areas can be expensive, especially during scrolling or animation on low-end phones. Keep the blurred area moderate and avoid stacking many blurred panels on one screen.
Can I use this effect on text?
The generated CSS targets a container. You can apply the same properties to a button, navigation bar, or modal, but check text contrast carefully because the backdrop changes as the user scrolls.