CSS Background Filter Generator
Online CSS background filter generator with visual backdrop-filter controls, live frosted-glass preview, and one-click CSS copy for modals, cards, and navigation bars.
Live Preview
Frosted Glass Card
Use backdrop-filter to blur and tint content behind this surface.
Tip: move any slider and the preview updates instantly.
CSS Code
.glass-effect {
backdrop-filter: blur(20px);
-webkit-backdrop-filter: blur(20px);
background: rgba(255, 255, 255, 0.3);
}Preset Effects
Filter Controls
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Tool Guide
CSS Background Filter Generator helps you combine backdrop-filter values visually so you can create frosted-glass UI surfaces and export copy-ready CSS in seconds.
What It Solves
When building modals, cards, nav bars, or floating panels, you can tune blur, contrast, tint behavior, and transparency live instead of manually rewriting style values repeatedly.
Key Features
- Includes blur, brightness, contrast, saturate, grayscale, hue-rotate, invert, and opacity controls for backdrop-filter.
- Provides a separate glass background opacity slider for transparent layer tuning.
- Offers practical presets for quick starting points and faster visual iteration.
- Generates complete CSS with both backdrop-filter and -webkit-backdrop-filter in one click.
How To Use
- Adjust sliders on the right and observe the live preview response.
- Optionally select a preset first, then fine-tune details.
- Copy the generated CSS when the visual result matches your design.
- Apply the declaration to your target container in your project styles.
Use Cases
- Frosted backgrounds for dialogs, popovers, and side panels
- Blurred nav bars and floating action layers on content-heavy pages
- Visual tuning for marketing cards and branded UI blocks
- Design handoff checks when turning mockups into production CSS
Tips
- Start with blur and background opacity, then refine contrast and saturation.
- Increase readability by balancing brightness and contrast on busy backdrops.
- Validate browser support for backdrop-filter and prepare fallback styles.
- Keep mobile blur values moderate to avoid unnecessary rendering cost.
Privacy Note
Your parameters and generated CSS are never uploaded. All calculations and previews run locally in your browser.