Glassmorphism Generator is a free online tool that lets you create frosted glass CSS effects with a real-time visual preview. Adjust blur intensity, background opacity, border transparency, shadow depth, border radius, and saturation boost using intuitive sliders, then copy production-ready code in CSS, Tailwind, or SCSS format. Everything runs in your browser with no uploads or signups required.
Glassmorphism (also called glass UI or frosted glass effect) is a modern design trend that uses background blur and semi-transparent layers to create depth and hierarchy in user interfaces. Designers and developers building dashboards, landing pages, card layouts, and modal overlays frequently need precise control over these properties, and this tool eliminates the guesswork.
How to Use This Tool
Follow these steps to generate glassmorphism CSS with this free online tool:
Choose a preset or start from scratch - Select from Subtle, Standard, Heavy, Colorful, Dark Glass, or Frosted presets to get a quick starting point, or leave the defaults and adjust manually.
Adjust the sliders - Fine-tune blur (0-40px), background opacity (0-1), border opacity (0-1), shadow intensity (0-0.6), border radius (0-40px), and saturation boost (100-200%) until the preview looks right.
Pick colors and scene - Use the color pickers to set background and border tint colors. Switch between 6 scene backgrounds (Gradient, Mesh, Ocean, Forest, Sunset, Dark) to see how your glass effect looks against different content.
Copy the generated code - Switch between CSS, Tailwind, or SCSS Mixin tabs to get the output format you need, then click Copy to send it to your clipboard ready to paste into your project.
Key Features
Real-time live preview - See your glassmorphism effect update instantly as you move sliders, with animated floating shapes behind the glass card for realistic depth testing.
6 design presets - Jump-start your design with Subtle, Standard, Heavy, Colorful, Dark Glass, and Frosted presets that configure all parameters at once.
3 code output formats - Get your glass effect as plain CSS properties, Tailwind CSS utility classes (with arbitrary value alternatives), or a reusable SCSS mixin with configurable parameters.
6 scene backgrounds - Test your glass against Gradient, Mesh, Ocean, Forest, Sunset, and Dark backgrounds to ensure it works across different color contexts.
Full color customization - Independent color pickers for background tint and border color with hex input support, giving you complete control over the glass appearance.
Saturation boost control - Increase the backdrop-filter saturation from 100% to 200% for richer, more vibrant glass effects that make background content pop through.
Common Use Cases
Web designers use this glassmorphism generator to prototype card components for SaaS dashboards where content layers need visual separation without hard borders. Frontend developers building landing pages use it to create hero section overlays that let background imagery bleed through elegantly. UI engineers working on design systems generate the exact backdrop-filter values for their component libraries rather than guessing pixel values. Mobile app developers use the Tailwind output to quickly apply glass effects in React Native or Flutter-web projects. Portfolio creators and freelancers grab the SCSS mixin to maintain consistent glass styling across multiple components in a single project.
Frequently Asked Questions
Does glassmorphism work in all browsers?
The backdrop-filter property is supported in all modern browsers including Chrome, Firefox, Safari, and Edge. The generated CSS includes the -webkit-backdrop-filter prefix for full Safari compatibility. Internet Explorer does not support it, but you can provide a solid fallback background for older browsers.
What blur value should I use for glassmorphism?
For subtle glass effects, 4-8px blur works well. Standard glassmorphism typically uses 10-16px. Heavy frosted effects use 20-40px. The right value depends on how much of the background you want visible through the glass. Use this tool's preview to find the sweet spot for your specific design.
Is backdrop-filter bad for performance?
Backdrop-filter does use GPU compositing, but on modern hardware the impact is minimal for a few elements. Avoid applying heavy blur to large areas or stacking multiple glassmorphic layers on top of each other. If you notice frame drops on mobile, reduce the blur value or limit glass effects to smaller components like cards and modals.
Can I use glassmorphism with Tailwind CSS?
Yes. This tool generates Tailwind utility classes for your glass effect, including backdrop-blur, bg-opacity, border-opacity, rounded, and shadow classes. For precise values that do not match Tailwind's default scale, it also provides arbitrary value syntax like backdrop-blur-[12px] and bg-[rgba(255,255,255,0.15)].
What is the difference between glassmorphism and frosted glass in CSS?
They refer to the same visual technique. Glassmorphism is the design trend name popularized in 2020, while frosted glass effect is the descriptive term for the CSS implementation using backdrop-filter: blur() combined with a semi-transparent background. This generator creates both light and dark glass variants, letting you achieve either the classic white frost or deeper tinted glass looks.