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The <feMorphology> SVG filter primitive is used to erode or dilate the input image. It's usefulness lies especially in fattening or thinning effects.

Usage context

CategoriesFilter primitive element
Permitted contentAny number of the following elements, in any order:
<animate>, <set>

Attributes

Global attributes

Specific attributes

DOM Interface

This element implements the SVGFEMorphologyElement interface.

Examples

Filtering SVG content

SVG

<svg xmlns="http://www.w3.org/2000/svg" width="300" height="180">
  <filter id="erode">
    <feMorphology operator="erode" radius="1"/>
  </filter>
  <filter id="dilate">
    <feMorphology operator="dilate" radius="2"/>
  </filter>
  <text y="1em">Normal text</text>
  <text id="thin" y="2em">Thinned text</text>
  <text id="thick" y="3em">Fattened text</text>
</svg>

CSS

text {
  font-family: Arial, Helvetica, sans-serif;
  font-size: 3em;
}

#thin {
  filter: url(#erode);
}

#thick {
  filter: url(#dilate);
}

Filtering HTML content

SVG

<svg xmlns="http://www.w3.org/2000/svg" width="0" height="0">
  <filter id="erode">
    <feMorphology operator="erode" radius="1"/>
  </filter>
  <filter id="dilate">
    <feMorphology operator="dilate" radius="2"/>
  </filter>
</svg>

<p>Normal text</p>
<p id="thin">Thinned text</p>
<p id="thick">Fattened text</p>

CSS

p {
  margin: 0;
  font-family: Arial, Helvetica, sans-serif;
  font-size: 3em;
}

#thin {
  filter: url(#erode);
}

#thick {
  filter: url(#dilate);
}

Specifications

Specification Status Comment
Filter Effects Module Level 1
The definition of '<feMorphology>' in that specification.
Working Draft No change
Scalable Vector Graphics (SVG) 1.1 (Second Edition)
The definition of '<feMorphology>' in that specification.
Recommendation Initial definition

Browser compatibility

Update compatibility data on GitHub
DesktopMobile
ChromeEdgeFirefoxInternet ExplorerOperaSafariAndroid webviewChrome for AndroidEdge MobileFirefox for AndroidOpera for AndroidSafari on iOSSamsung Internet
Basic supportChrome Full support YesEdge Full support YesFirefox Full support 4IE Full support YesOpera Full support 9Safari ? WebView Android ? Chrome Android Full support YesEdge Mobile Full support YesFirefox Android ? Opera Android ? Safari iOS ? Samsung Internet Android ?
On HTML elementsChrome Full support YesEdge No support NoFirefox Full support YesIE No support NoOpera Full support YesSafari ? WebView Android ? Chrome Android Full support YesEdge Mobile No support NoFirefox Android Full support YesOpera Android ? Safari iOS ? Samsung Internet Android ?
inChrome Full support YesEdge Full support YesFirefox Full support 4IE Full support YesOpera Full support 9Safari ? WebView Android ? Chrome Android Full support YesEdge Mobile Full support YesFirefox Android ? Opera Android ? Safari iOS ? Samsung Internet Android ?
operatorChrome Full support YesEdge Full support YesFirefox Full support 4IE Full support YesOpera Full support 9Safari ? WebView Android ? Chrome Android Full support YesEdge Mobile Full support YesFirefox Android ? Opera Android ? Safari iOS ? Samsung Internet Android ?
radiusChrome Full support YesEdge Full support YesFirefox Full support 4IE Full support YesOpera Full support 9Safari ? WebView Android ? Chrome Android Full support YesEdge Mobile Full support YesFirefox Android ? Opera Android ? Safari iOS ? Samsung Internet Android ?

Legend

Full support  
Full support
No support  
No support
Compatibility unknown  
Compatibility unknown

See also

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최종 변경자: chrisdavidmills,