The fill-opacity attribute is a presentation attribute defining the opacity of the paint server (color, gradient, pattern, etc.) applied to a shape.
Note: As a presentation attribute fill-opacity can be used as a CSS property.
You can use this attribute with the following SVG elements:
<svg viewBox="0 0 400 100" xmlns="http://www.w3.org/2000/svg">
<!-- Default fill opacity: 1 -->
<circle cx="50" cy="50" r="40" />
<!-- Fill opacity as a number -->
<circle cx="150" cy="50" r="40" fill-opacity="0.7" />
<!-- Fill opacity as a percentage -->
<circle cx="250" cy="50" r="40" fill-opacity="50%" />
<!-- Fill opacity as a CSS property -->
<circle cx="350" cy="50" r="40" style="fill-opacity: .25;" />
</svg>
| Value | [0-1] | <percentage> |
|---|---|
| Default value | 1 |
| Animatable | Yes |
Note: SVG2 introduces percentage values for fill-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].
| Specification |
|---|
| Scalable Vector Graphics (SVG) 2 # FillOpacity |
| Desktop | Mobile | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Chrome | Edge | Firefox | Internet Explorer | Opera | Safari | WebView Android | Chrome Android | Firefox for Android | Opera Android | Safari on IOS | Samsung Internet | |
fill-opacity |
No | No | No | No | No | No | No | No | No | No | No | No |
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https://developer.mozilla.org/en-US/docs/Web/SVG/Attribute/fill-opacity