stroke-opacity
The stroke-opacity
attribute is a presentation attribute defining the opacity of the paint server (color, gradient, pattern, etc.) applied to the stroke of a shape.
Note: As a presentation attribute stroke-opacity
can be used as a CSS property.
You can use this attribute with the following SVG elements:
Example
html
<svg viewBox="0 0 40 10" xmlns="http://www.w3.org/2000/svg">
<!-- Default stroke opacity: 1 -->
<circle cx="5" cy="5" r="4" stroke="green" />
<!-- Stroke opacity as a number -->
<circle cx="15" cy="5" r="4" stroke="green" stroke-opacity="0.7" />
<!-- Stroke opacity as a percentage -->
<circle cx="25" cy="5" r="4" stroke="green" stroke-opacity="50%" />
<!-- Stroke opacity as a CSS property -->
<circle cx="35" cy="5" r="4" stroke="green" style="stroke-opacity: .3;" />
</svg>
Usage notes
Value |
[0-1] |
<percentage>
|
---|---|
Default value | 1 |
Animatable | Yes |
Note: SVG2 introduces percentage values for stroke-opacity
, however, it is not widely supported yet (See Browser compatibility below) as a consequence, it is best practices to set opacity with a value in the range [0-1]
.
It's important to know that the stroke partially covers the fill of a shape, so a stroke with an opacity different than 1
will partially show the fill underneath. To avoid this effect, it is possible to apply a global opacity with the opacity
attribute or to put the stroke behind the fill with the paint-order
attribute.
Specifications
Specification |
---|
Scalable Vector Graphics (SVG) 2 # StrokeOpacity |
Browser compatibility
BCD tables only load in the browser