Index

The <feGaussianBlur> SVG filter primitive blurs the input image by the amount specified in {{SVGAttr("stdDeviation")}}, which defines the bell-curve.

Like other filter primitives, it handles color components in the linearRGB {{glossary("color space")}} by default. You can use {{svgattr("color-interpolation-filters")}} to use sRGB instead.

Usage context

{{svginfo}}

Attributes

• {{SVGAttr("in")}}
• {{SVGAttr("stdDeviation")}}
• {{SVGAttr("edgeMode")}}
• Filter primitive attributes: {{SVGAttr("x")}}, {{SVGAttr("y")}}, {{SVGAttr("width")}}, {{SVGAttr("height")}}, {{SVGAttr("result")}}

DOM Interface

This element implements the {{domxref("SVGFEGaussianBlurElement")}} interface.

Example

Basic example

SVG

<svg
  width="230"
  height="120"
  xmlns="http://www.w3.org/2000/svg"
  xmlns:xlink="http://www.w3.org/1999/xlink">
  <filter id="blurMe">
    <feGaussianBlur in="SourceGraphic" stdDeviation="5" />
  </filter>

  <circle cx="60" cy="60" r="50" fill="green" />

  <circle cx="170" cy="60" r="50" fill="green" filter="url(#blurMe)" />
</svg>

Result

{{EmbedLiveSample("Basic_example", "", "130")}}

Drop shadow example

SVG

<svg
  width="120"
  height="120"
  xmlns="http://www.w3.org/2000/svg"
  xmlns:xlink="http://www.w3.org/1999/xlink">
  <filter id="dropShadow">
    <feGaussianBlur in="SourceAlpha" stdDeviation="3" />
    <feOffset dx="2" dy="4" />
    <feMerge>
      <feMergeNode />
      <feMergeNode in="SourceGraphic" />
    </feMerge>
  </filter>

  <circle cx="60" cy="60" r="50" fill="green" filter="url(#dropShadow)" />
</svg>

Result

{{EmbedLiveSample("Drop_shadow_example", "", "130")}}

Specifications

{{Specifications}}

Browser compatibility

{{Compat}}

See also

• SVG Filter primitive attributes
• {{SVGElement("filter")}}
• {{SVGElement("feBlend")}}
• {{SVGElement("feColorMatrix")}}
• {{SVGElement("feComponentTransfer")}}
• {{SVGElement("feComposite")}}
• {{SVGElement("feConvolveMatrix")}}
• {{SVGElement("feDiffuseLighting")}}
• {{SVGElement("feDisplacementMap")}}
• {{SVGElement("feFlood")}}
• {{SVGElement("feImage")}}
• {{SVGElement("feMerge")}}
• {{SVGElement("feMorphology")}}
• {{SVGElement("feOffset")}}
• {{SVGElement("feSpecularLighting")}}
• {{SVGElement("feTile")}}
• {{SVGElement("feTurbulence")}}
• SVG tutorial: Filter effects