Hardware-accelerated CSS backdrop blur overlay card.
Our free Glassmorphism Generator provides frontend developers and UI/UX designers with a visual studio to build frosted glass card components using modern CSS backdrop-filter: blur(...) properties. Configures real-time surface RGBA opacities, backdrop saturation levels (100%–300%), specular light borders, container corner radii, and multi-layered depth shadows. Includes 4 switchable background canvas presets to evaluate visual refraction contrast and exports standard vendor-prefixed CSS, Tailwind CSS arbitrary classes, and CSS custom variables.
Choose a background wallpaper (Sunset Mesh, Neon Grid, Bokeh, Dark) to preview glass refraction.
Fine-tune backdrop blur, surface opacity, saturation, border highlight, and border radius sliders.
Copy standard CSS declarations, Tailwind utility strings, or CSS variables directly to your clipboard.
Generates hardware-accelerated backdrop-filter: blur(...) styles for buttery 60fps scrolling performance.
Simulates edge glass refraction using subtle semi-transparent white/black borders and rounded container geometry.
Instantly exports cross-browser vendor-prefixed CSS, Tailwind CSS arbitrary classes, and CSS custom properties.
Glassmorphism relies on the W3C CSS Filter Effects Module Level 1 specification, specifically the backdrop-filter property. Unlike standard filter: blur() which blurs an element's own rendered children, backdrop-filter applies graphical operations (gaussian blur, saturation boosts, brightness contrast adjustments) to all DOM layers painted directly beneath the element's bounding box. Browsers render this by creating a separate GPU compositing layer, capturing pixels behind the container, and applying a fast fragment shader blur pass.
To achieve authentic physical glass optical characteristics, translucent RGBA background fills (rgba(255, 255, 255, 0.25)) must be paired with subtle specular borders (1px solid rgba(255, 255, 255, 0.25)). The light border simulates fresnel reflection along container edges, preventing the glass card from blending into complex background wallpaper gradients. For optimal cross-browser support, developers must include both standard backdrop-filter and Apple WebKit vendor-prefixed -webkit-backdrop-filter declarations.
Combining saturate(180%) with gaussian backdrop blurring compensates for contrast attenuation that naturally occurs when blurring colorful background images. Increasing saturation revitalizes vibrant hues passing through translucent glass surfaces, producing a vivid visual effect popular across modern desktop operating systems and mobile application interfaces.
backdrop-filter: blur(12px) saturate(180%), a semi-transparent RGBA background (rgba(255, 255, 255, 0.25)), and a thin semi-transparent border (1px solid rgba(255, 255, 255, 0.25)).-webkit-backdrop-filter for hardware-accelerated layer blurring. Including both standard and vendor-prefixed declarations guarantees cross-browser compatibility.bg-white/25 backdrop-blur-[12px] border border-white/25) directly into your HTML elements or React/Vue JSX components.