Glassmorphism Generator
Generate CSS for the frosted-glass effect using backdrop-filter and transparency.
What is the Glassmorphism Generator?
The Glassmorphism Generator creates the CSS for a frosted-glass UI effect using backdrop-filter blur, a semi-transparent background, and a subtle border. Adjust the controls and the tool shows a live preview alongside the exact CSS to copy.
Glassmorphism layers translucent panels over a colorful background to give interfaces depth. Getting the balance of transparency, blur, and border opacity right by hand takes trial and error, so this tool lets you tune each value with sliders and see the result instantly.
It is free and runs entirely in your browser with no signup. The CSS is generated client-side and nothing is sent to a server.
How to use the Glassmorphism Generator
- 1Pick a base color with the color picker or type a hex value into the text field.
- 2Adjust the Background Opacity slider to control how transparent the glass panel looks.
- 3Set the Blur Amount slider to change the strength of the backdrop blur behind the panel.
- 4Tune the Border Opacity and Border Radius sliders to refine the edge and corners.
- 5Watch the live preview update, then click Copy CSS to copy the generated rules.
What you can use it for
- Designing a frosted-glass navigation bar or modal that sits over a gradient background.
- Building translucent card components for a dashboard or landing page.
- Prototyping a glassmorphism login form to share with designers before implementation.
- Creating overlay panels for hero sections that keep background imagery partly visible.
- Experimenting with blur and opacity values to match an existing design system.
Key features
- Live preview rendered over a gradient so you can judge the effect in context.
- Sliders for background opacity, blur strength, border opacity, and corner radius.
- Generated CSS that includes both backdrop-filter and the -webkit- prefixed version.
- A row of preset color swatches for quick base-color changes.
Frequently asked questions
What is glassmorphism in CSS?
Glassmorphism is a UI style where elements look like frosted glass. It is achieved with a semi-transparent background, a backdrop-filter blur that blurs whatever is behind the element, and a light border to define the edge.
Is the Glassmorphism Generator free?
Yes, it is free with no signup required. It runs in your browser and you can generate as much CSS as you need.
Why does the backdrop-filter blur not show on my site?
The blur only appears when there is content behind the element to blur. The generated CSS includes a -webkit-backdrop-filter line for Safari, but some older browsers do not support backdrop-filter at all, so the panel will simply look solid-transparent there.
What CSS properties does the generator output?
It outputs background as an rgba color, border-radius, a soft box-shadow, backdrop-filter and -webkit-backdrop-filter for the blur, and a 1px border using a semi-transparent color.
Can I use my own brand color for the glass effect?
Yes. Use the color picker or type any 6-digit hex value into the text field. The tool converts it to an rgba value with your chosen opacity for both the background and the border.
Does it work for dark backgrounds?
Yes. Pick a darker base color or lower the opacity to suit a dark theme. The live preview always renders over a fixed gradient, so check the copied CSS against your own background for the final look.