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<feDropShadow>

The SVG <feDropShadow> filter primitive creates a drop shadow of the input image. It can only be used inside a <filter> element.

Note: The drop shadow color and opacity can be changed by using the flood-color and flood-opacity presentation attributes.

Example

<svg viewBox="0 0 30 10" xmlns="http://www.w3.org/2000/svg">
  <defs>
    <filter id="shadow">
      <feDropShadow dx="0.2" dy="0.4" stdDeviation="0.2" />
    </filter>
    <filter id="shadow2">
      <feDropShadow dx="0" dy="0" stdDeviation="0.5" flood-color="cyan" />
    </filter>
    <filter id="shadow3">
      <feDropShadow
        dx="-0.8"
        dy="-0.8"
        stdDeviation="0"
        flood-color="pink"
        flood-opacity="0.5" />
    </filter>
  </defs>

  <circle cx="5" cy="50%" r="4" style="fill:pink; filter:url(#shadow);" />

  <circle cx="15" cy="50%" r="4" style="fill:pink; filter:url(#shadow2);" />

  <circle cx="25" cy="50%" r="4" style="fill:pink; filter:url(#shadow3);" />
</svg>

Attributes

dx: This attribute defines the x offset of the drop shadow. Value type: <number>; Default value: 2; Animatable: yes
dy: This attribute defines the y offset of the drop shadow. Value type: <number>; Default value: 2; Animatable: yes
stdDeviation: This attribute defines the standard deviation for the blur operation in the drop shadow. Value type: <number>; Default value: 2; Animatable: yes

Global attributes

Core Attributes: Most notably: id
Styling Attributes: class, style
Filter primitive attributes: height, in, result, x, y, width
Presentation Attributes: Most notably: flood-color, flood-opacity

Usage notes

Categories	Filter primitive element
Permitted content	Any number of the following elements, in any order: `<animate>`, `<script>`, `<set>`

Specifications

Specification
Filter Effects Module Level 1 # feDropShadowElement

Browser compatibility

	Desktop						Mobile
	Chrome	Edge	Firefox	Internet Explorer	Opera	Safari	WebView Android	Chrome Android	Firefox for Android	Opera Android	Safari on IOS	Samsung Internet
`feDropShadow`	Yes	79	Yes	No	Yes	No	Yes	Yes	Yes	Yes	No	Yes
`dx`	Yes	79	Yes	No	Yes	No	Yes	Yes	Yes	Yes	No	Yes
`dy`	Yes	79	Yes	No	Yes	No	Yes	Yes	Yes	Yes	No	Yes
`in`	Yes	79	Yes	No	Yes	No	Yes	Yes	Yes	Yes	No	Yes
`stdDeviation`	Yes	79	Yes	No	Yes	No	Yes	Yes	Yes	Yes	No	Yes

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https://developer.mozilla.org/en-US/docs/Web/SVG/Element/feDropShadow