Backdrop Filter Generator – Free CSS Tool

Use the Backdrop Filter Generator to build CSS backdrop-filter effects — blur, brightness, saturation, and more — with a live preview and copy-ready code. No signup required.

.your-element {
  backdrop-filter: blur(10px) saturate(180%);
  -webkit-backdrop-filter: blur(10px) saturate(180%);
}

How It Works

The backdrop-filter CSS property applies visual effects to whatever sits behind an element, not the element itself. That’s the key difference from the regular filter property, which affects the element’s own content.

This generator lets you combine up to nine filter functions — blur(), brightness(), contrast(), saturate(), grayscale(), sepia(), hue-rotate(), invert(), and opacity() — and see the result applied live to a sample card. As you adjust each slider, the tool writes the matching CSS in real time, including the -webkit-backdrop-filter prefix Safari still requires. When you’re happy with the look, copy the code and paste it straight into your stylesheet.

Use Cases

• Glassmorphism UI design — frosted-glass navbars, modals, and cards are one of the most common uses of backdrop-filter, and this tool makes it easy to dial in the right blur and saturation combo without guessing values in dev tools.
• WordPress theme customization — if you’re editing a child theme or using a block editor’s custom CSS panel, you can generate the effect here first, then paste it into the relevant selector.
• Overlay and lightbox effects — blurred backgrounds behind popups and image overlays draw attention to foreground content without a hard color block.

Frequently Asked Questions

Why do I need the -webkit-backdrop-filter prefix?
Safari (desktop and iOS) requires the -webkit- prefix to render backdrop-filter correctly, even in fairly recent versions. Leaving it out means the effect silently fails for Safari users while working everywhere else. This tool includes the prefix by default — you can toggle it off if you’re targeting only Chromium-based browsers.

What’s the difference between backdrop-filter and filter?
filter applies effects to the element itself and everything inside it. backdrop-filter applies effects only to the content behind the element, leaving the element’s own content (text, icons) sharp. That’s what makes glassmorphism possible — a blurred background with crisp text on top.

Does backdrop-filter work in all browsers?
It’s supported in all major modern browsers — Chrome, Edge, Safari, and Firefox (from version 103) — but always test on older browser versions if your audience skews toward legacy setups, since support was inconsistent before 2022.

Does backdrop-filter affect page performance?
Blur and other filter effects are GPU-accelerated in modern browsers, but applying them to large areas or many elements at once can still impact scroll performance on lower-powered devices. Keep blurred elements reasonably sized and avoid stacking multiple blurred layers.

What happens if a browser doesn’t support backdrop-filter?
Unsupported browsers simply ignore the property — the element behind stays fully visible with no blur or effect applied. For critical UI, pair it with a semi-transparent background color as a fallback so the element still reads clearly without the blur.