The stdDeviation attribute defines the standard deviation for the blur operation.
You can use this attribute with the following SVG elements:
stdDeviation
Example
<svg viewBox="0 0 480 200" xmlns="http://www.w3.org/2000/svg">
<filter id="gaussianBlur1">
<feGaussianBlur stdDeviation="1" />
</filter>
<filter id="gaussianBlur2">
<feGaussianBlur stdDeviation="5" />
</filter>
<filter id="gaussianBlur3" x="-30%" y="-30%" width="160%" height="160%">
<feGaussianBlur stdDeviation="10" />
</filter>
<circle cx="100" cy="100" r="50" style="filter: url(#gaussianBlur1);" />
<circle
cx="100"
cy="100"
r="50"
style="filter: url(#gaussianBlur2); transform: translateX(140px);" />
<circle
cx="100"
cy="100"
r="50"
style="filter: url(#gaussianBlur3); transform: translateX(280px);" />
</svg>
Usage notes
| Value | <number-optional-number> |
|---|---|
| Default value | 0 |
| Animatable | Yes |
-
<number-optional-number> -
If two numbers are provided, the first number represents a standard deviation value along the x-axis. The second value represents a standard deviation along the y-axis. If one number is provided, then that value is used for both X and Y.
A negative value is forbidden. A value of zero disables the effect of the given filter primitive (i.e., the result is the filter input image). If
stdDeviationis 0 in only one of X or Y, then the effect is that the blur is only applied in the direction that has a non-zero value.
Specifications
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 | |
stdDeviation |
Yes | ≤18 | 4 | Yes | 9 | 9.1 | Yes | Yes | Yes | Yes | Yes | Yes |
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https://developer.mozilla.org/en-US/docs/Web/SVG/Attribute/stdDeviation