Generators Utility

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CSS Glassmorphism Generator

Design a frosted-glass surface visually and copy the CSS. Adjust blur, background opacity, border opacity and corner radius, watch the preview update live, and take away a rule set you can paste directly into a stylesheet or component.

Glass Card Preview

Frosted glass visual container with live CSS backdrop-filter.

Adjust Glass Parameters

Backdrop Blur:16px

Background Opacity:65%

Border Translucency:20%

Corner Radius:24px

Generated CSS Code

/* Glassmorphism Effect */
background: rgba(255, 255, 255, 0.65);
backdrop-filter: blur(16px) saturate(180%);
-webkit-backdrop-filter: blur(16px) saturate(180%);
border: 1px solid rgba(255, 255, 255, 0.2);
border-radius: 24px;
box-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.12);

How it works

1
Adjust the blur, background opacity, border and corner radius sliders.
2
Watch the live preview to judge the effect over a real background rather than in the abstract.
3
Fine-tune until the surface stays readable — glass effects fail when contrast drops too far.
4
Copy the generated CSS and paste it into your stylesheet or component.

What people use it for

Styling a card, modal or navigation bar that floats over a photo or gradient.
Prototyping a frosted panel before committing to it in the design system.
Matching an existing glass surface by eye when you have the screenshot but not the CSS.
Teaching or documenting how backdrop-filter behaves at different blur values.

Supported formats & options

Output	CSS declarations: backdrop-filter, background, border, border-radius
Controls	Blur radius, background opacity, border opacity, corner radius

Key advantages & benefits

Live visual feedback

Every slider updates the preview immediately, which is faster than editing values in a stylesheet and reloading.

Copy-ready CSS

Output is plain CSS with backdrop-filter and the matching background and border rules — no framework required.

Contrast stays visible

Because you tune against a real preview, you can see when text over the surface stops being readable.

No build step

The rules work in a plain stylesheet, a CSS module, Tailwind's arbitrary values or a styled-component.

Limits & things to know

backdrop-filter is expensive to composite. Several large blurred surfaces on one page can measurably hurt scrolling performance on low-end devices.
The effect only shows over content behind it. On a flat solid background a glass surface looks like a plain tinted box.
Accessibility is your responsibility: check that text over the surface still meets contrast requirements against the busiest part of the backdrop.

Troubleshooting

The blur does not appear in the browser

backdrop-filter needs the element to sit over other content and requires a non-fully-opaque background. Some older browsers also need the -webkit- prefixed property.

Text over the panel is hard to read

Increase the background opacity or darken the tint. Blur alone does not guarantee contrast when the backdrop is bright and busy.

Privacy & data handling

Everything here is CSS generated in the page from slider values. Nothing is uploaded, and nothing about your design is recorded.

Design a frosted-glass panel visually and copy the CSS. This free glassmorphism generator gives you live control over blur, transparency, border and shadow, and outputs the backdrop-filter rules that produce the effect in real browsers.

Live visual preview — drag blur, opacity and saturation and watch the panel update instantly against a real background instead of guessing at values.
Production-ready backdrop-filter CSS — the generated rule includes the vendor-prefixed fallback needed for Safari, so the effect does not silently vanish on iOS.
Border and shadow control — the subtle light border and soft shadow are what sell the glass effect — both are tunable and included in the output.
Copy straight into your stylesheet — paste the block into a CSS file, a styled component or a Tailwind arbitrary-value utility.
Free, instant, in-browser — no account, no export credits and nothing uploaded.

Sample your background colour first with the Color Picker, then compress the finished stylesheet with the CSS Minifier.

Frequently asked questions

Is backdrop-filter supported in all browsers?

Yes! All modern browsers (Chrome, Safari, Firefox, Edge) support backdrop-filter CSS properties.

Does the glass effect hurt performance?

It can. backdrop-filter forces the browser to re-composite what is behind the element, and several large blurred surfaces on one page can make scrolling stutter on low-end devices. Use it for a few key surfaces rather than everywhere.

Why does the blur not show up?

backdrop-filter only has an effect when there is content behind the element and the background is not fully opaque. Some older browsers also need the -webkit- prefixed property.

How do I keep text readable on glass?

Raise the background opacity or add a tint. Blur alone does not guarantee contrast, and a bright, busy backdrop will defeat it — check the text against the busiest part of the background.

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