Glassmorphism CSS Generator
Use the intuitive sliders to generate beautiful frosted glass effects for your modern web designs. Instantly copy the cross-browser CSS code to your clipboard.
Controls
Generated CSS
/* Glassmorphism card effect */
.glass-card {
background: rgba(255, 255, 255, 0.2);
backdrop-filter: blur(10px);
-webkit-backdrop-filter: blur(10px);
border: 1px solid rgba(255, 255, 255, 0.3);
box-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.2);
border-radius: 16px;
}Glassmorphism CSS Generator: Create Stunning UI Effects
Welcome to the premier Glassmorphism CSS Generator. If you are a frontend developer or a UI/UX designer, you have likely noticed the massive surge in "frosted glass" effects across modern websites and operating systems (like macOS Big Sur, iOS, and Windows 11 Fluent Design). Glassmorphism is a design trend that emphasizes semi-transparent, blurry backgrounds that allow colorful elements to shine through, creating a sense of depth and hierarchy in your user interface.
While the visual effect is stunning, writing the precise CSS to achieve perfect cross-browser glassmorphism can be tricky. This tool allows you to visually tweak the blur, opacity, borders, and shadows in real-time, instantly generating the exact CSS code you need to copy and paste into your project.
The 4 Key Elements of Glassmorphism
To achieve a realistic frosted glass look in CSS, four core properties must work together harmoniously:
- 1. Translucency (Background Opacity): The glass card must have a semi-transparent background color. Typically, this is white
rgba(255, 255, 255, 0.2)for a light theme, or blackrgba(0, 0, 0, 0.2)for a dark theme. If the opacity is too high, it looks like a solid block; if too low, it becomes invisible. - 2. Background Blur (Backdrop Filter): This is the magic ingredient. The CSS
backdrop-filter: blur(10px)property applies a blur effect only to the elements behind the glass card, mimicking real frosted glass. - 3. Light Border: A very subtle, 1-pixel semi-transparent white border is essential. It catches the simulated light and defines the edge of the glass, separating it from the background.
- 4. Vivid Background: Glassmorphism fails on solid white or solid black backgrounds. The effect relies on colorful gradients, abstract shapes, or photographs sitting behind the glass to make the blur noticeable.
How to Use the Generator
- Adjust the Blur: Use the first slider to increase or decrease the intensity of the frosted effect. A blur between 10px and 20px usually yields the most realistic results.
- Set Background Opacity: Tweak how transparent the glass is. A lower opacity makes the glass look thinner and more modern.
- Modify the Border: The border opacity defines the "edge glow". Keep this relatively low (around 0.2 to 0.4) for a premium feel.
- Choose Glass Color: Switch between Light Glass (white base) or Dark Glass (black base) depending on your website's theme.
- Copy CSS: Once you are satisfied with the live preview, click "Copy CSS" and paste it directly into your stylesheet or styled-components.
Browser Compatibility & Best Practices
The core technology behind this effect is the CSS backdrop-filter property. As of 2026, it enjoys widespread support across all modern browsers including Google Chrome, Mozilla Firefox, Microsoft Edge, and Opera.
The Safari Issue: Apple's Safari browser (on both iOS and macOS) historically required a vendor prefix to render this effect correctly. Our generator automatically includes the -webkit-backdrop-filter property in the generated code to ensure your UI looks perfect on iPhones and MacBooks.
Accessibility Considerations: When placing text inside a glassmorphic container, ensure the contrast ratio remains legible. If your background is very light, use dark text on your glass card. If your background is dark, use white text and consider adding a subtle text-shadow (e.g., text-shadow: 0 1px 3px rgba(0,0,0,0.5)) to make the text pop against the blur.
Frequently Asked Questions
background-color (it must be rgba with opacity less than 1), or (B) there is nothing colorful or distinct directly behind the element to blur.backdrop-filter is hardware-accelerated on most modern devices, meaning the GPU handles the blur rendering efficiently. However, heavily stacking multiple glassmorphic elements on top of each other over complex animations can cause frame drops on older mobile devices. Use it strategically for hero sections, modals, or navigation bars.Elevate your UI design today. Bookmark this free Glassmorphism Generator for your next frontend project!
