fill-opacity
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:
Example
<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>
Usage notes
| 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].
Specifications
| Specification | Status | Comment |
|---|---|---|
| Scalable Vector Graphics (SVG) 2 The definition of 'fill-opacity' in that specification. |
Candidate Recommendation | Definition for shapes and texts |
| Scalable Vector Graphics (SVG) 1.1 (Second Edition) The definition of 'fill-opacity' in that specification. |
Recommendation | Initial definition for shapes and texts |
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 | |
fill-opacity |
?
|
?
|
?
|
?
|
?
|
?
|
?
|
?
|
?
|
?
|
?
|
?
|
© 2005–2021 MDN contributors.
Licensed under the Creative Commons Attribution-ShareAlike License v2.5 or later.
https://developer.mozilla.org/en-US/docs/Web/SVG/Attribute/fill-opacity
