How to Combine SVG with backdrop-filter
Use SVG shapes and masks to control where a CSS backdrop-filter blur applies.
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Shaped Frosted-Glass Effects
backdrop-filter: blur() frosts whatever is behind an element. Pair it with an SVG mask or clip-path to confine the blur to a custom shape — a blob, badge, or angled panel — instead of a plain rectangle.
- Apply backdrop-filter: blur() to an overlay element
- Use an SVG mask to give the blur a custom shape
- Great for frosted badges and shaped nav bars
Building the Effect
Convert your shape to SVG, apply it as a CSS mask on the blurred element, and the frosted region follows the SVG outline. Test fallbacks since backdrop-filter support varies.
- Convert the shape to SVG for masking
- Combine -webkit-backdrop-filter for Safari
- Provide a solid fallback where unsupported
Frequently Asked Questions
Can I shape a backdrop-filter blur with SVG?
Yes — apply an SVG as a CSS mask on the blurred element so the frosted region matches the SVG's outline.
Does backdrop-filter need a vendor prefix?
Yes — include -webkit-backdrop-filter alongside backdrop-filter for Safari support.
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