<feMorphology>
Baseline
Widely available
This feature is well established and works across many devices and browser versions. It’s been available across browsers since July 2015.
The <feMorphology> SVG filter primitive is used to erode or dilate the input image. Its usefulness lies especially in fattening or thinning effects.
Like other filter primitives, it handles color components in the linearRGB color space by default. You can use color-interpolation-filters to use sRGB instead.
Usage context
Attributes
DOM Interface
This element implements the SVGFEMorphologyElement interface.
Examples
Filtering SVG content
SVG
html
<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
css
text {
font-family: "Helvetica", "Arial", sans-serif;
font-size: 3em;
}
#thin {
filter: url("#erode");
}
#thick {
filter: url("#dilate");
}
Filtering HTML content
SVG
html
<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
css
p {
margin: 0;
font-family: "Helvetica", "Arial", sans-serif;
font-size: 3em;
}
#thin {
filter: url("#erode");
}
#thick {
filter: url("#dilate");
}
Specifications
| Specification |
|---|
| Filter Effects Module Level 1 # feMorphologyElement |
Browser compatibility
| desktop | mobile | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
feMorphology
|
|
|
|
|
|
|
|
|
|
|
|
|
in
|
|
|
|
|
|
|
|
|
|
|
|
|
operator
|
|
|
|
|
|
|
|
|
|
|
|
|
radius
|
|
|
|
|
|
|
|
|
|
|
|
|
Legend
Tip: you can click/tap on a cell for more information.
- Full support
- Full support