<feDropShadow>

The <feDropShadow> filter primitive creates a drop shadow of the input image. It is a shorthand filter, and is defined in terms of combinations of other filter primitives.

The result of the <feDropShadow> filter is equivalent to the following:

<feGaussianBlur in="alpha-channel-of-feDropShadow-in"
    stdDeviation="stdDeviation-of-feDropShadow"/>
<feOffset dx="dx-of-feDropShadow" dy="dy-of-feDropShadow"
    result="offsetblur"/>
<feFlood flood-color="flood-color-of-feDropShadow"
    flood-opacity="flood-opacity-of-feDropShadow"/>
<feComposite in2="offsetblur" operator="in"/>
<feMerge>
  <feMergeNode/>
  <feMergeNode in="in-of-feDropShadow"/>
</feMerge>

Usage context

Attributes

Global attributes

• Core attributes
• Presentation attributes
• Filter primitive attributes

Specific attributes

• class
• style
• in
• stdDeviation
• dx
• dy

DOM Interface

This element implements the SVGFEDropShadowElement interface.

Example

SVG

<svg width="200" height="200" xmlns="http://www.w3.org/2000/svg">
  <defs>
    <filter id="shadow">
      <feDropShadow dx="4" dy="8" stdDeviation="4"/>
    </filter>
  </defs>
  <circle cx="50%" cy="50%" r="80"
      style="fill:blue; filter:url(#shadow);"/>
</svg>

Result

Specifications

Browser compatibility

See also

• <filter>
• <feGaussianBlur>
• <feOffset>
• <feFlood>
• <feComposite>
• <feMerge>
• SVG tutorial: Filter effects