Best Free Online Developer Tools to Use in 2026
A practical, opinionated list of the best free online developer tools worth using in 2026, organized by category so you can find what you need fast.
Aug 08, 2026
CSS Glassmorphism Generator
Create stunning frosted glass UI effects with backdrop blur, transparency, and shadows. Real-time preview.
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Glass Card
Frosted glass effect
Shadow
What is Glassmorphism?
Glassmorphism is a UI design trend that creates a frosted glass-like effect using semi-transparent backgrounds, backdrop blur, and subtle shadows. It adds depth and visual hierarchy by making content appear to float above a blurred background.
This tool features:
- Real-time preview — See the glass effect update instantly as you adjust controls.
- Full customization — Control color, transparency, blur, border radius, border opacity, saturation boost, and shadow.
- Presets — Start from common glass styles like light, dark, vibrant, and subtle.
- Copy CSS — Export the generated CSS code with one click.
How to Use
- Choose a preset or customize from scratch — Select a preset to see common glass styles, then adjust the controls to fine-tune.
- Customize the appearance — Adjust the glass color, opacity, backdrop blur, border radius, border opacity, saturation, and shadow.
- Copy the CSS — Click Copy CSS to copy the generated glassmorphism styles.
Frequently Asked Questions
How do I use the generated CSS?
Copy the CSS code and add it to your stylesheet. Use the class .glass to apply the glass effect to any element. The backdrop-filter property creates the frosted glass look.
Does backdrop-filter work in all browsers?
Backdrop-filter is supported in all modern browsers (Chrome, Firefox, Safari, Edge). For older browsers, the semi-transparent background serves as a graceful fallback.
What does Saturation Boost do?
Saturation boost increases color intensity behind the glass element using the backdrop-filter: saturate() function. Higher values make background colors more vivid through the glass.
Last updated: 17 Aug 2026
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