Glassmorphism CSS Generator — frosted glass
Create frosted-glass (glassmorphism) cards with sliders for blur, transparency, saturation, border and radius — live preview and CSS, in your browser.
🔒 Runs entirely in your browser. Your input and output are never sent to a server or stored — fully private.
About this tool
This glassmorphism generator builds the frosted-glass look you see in modern app and web design, then hands you the CSS to copy. Adjust the blur, transparency, background tint, border and corner rounding, and a live panel shows the effect floating over a colorful backdrop so you can judge the readability. Under the hood it relies on backdrop-filter to blur whatever sits behind the element. When the panel looks right, copy the generated rules into your stylesheet — and it all runs in your browser.
Frequently asked questions
How does the frosted-glass effect actually work?
It layers three ingredients: a semi-transparent background so some color shows through, a backdrop-filter blur that frosts whatever sits behind the panel, and a subtle light border to catch the edge like real glass. The blur is the key part — it softens the content underneath instead of the panel's own text. Because the effect samples what is behind it, glassmorphism looks best floating over a colorful or photographic background rather than a flat one.
Does backdrop-filter work in every browser?
Backdrop-filter is supported in current versions of all major browsers, but with caveats. Safari needs the -webkit-backdrop-filter prefix, which the generator includes for you, and some older browsers ignore the property entirely — there the panel simply shows its plain semi-transparent background with no blur. Heavy blur can also tax performance on low-end devices. It is wise to keep your text readable even if the frosting fails to render, so the design degrades gracefully.
Is the generated CSS ready to use, and does the tool run locally?
Yes on both counts. The tool outputs a complete set of rules — background, blur, border and radius, with the -webkit- prefix included — that you can paste straight into your stylesheet and apply to any panel or card. All of it is generated locally in your browser as you adjust the sliders, so your design and settings are never uploaded, and the preview keeps working even offline once the page has loaded.