The opacity()
CSS function applies transparency to the samples in the input image. Its result is a <filter-function>
.
The source for this interactive example is stored in a GitHub repository. If you'd like to contribute to the interactive examples project, please clone https://github.com/mdn/interactive-examples and send us a pull request.
Note: This function is similar to the more established opacity
property. The difference is that with filters, some browsers provide hardware acceleration for better performance.
Syntax
opacity(amount)
Parameters
amount
- The amount of the conversion, specified as a
<number>
or a<percentage>
. A value of0%
is completely transparent, while a value of100%
leaves the input unchanged. Values between0%
and100%
are linear multipliers on the effect. The lacuna value for interpolation is1
.
Examples
opacity(0%) /* Completely transparent */ opacity(50%) /* 50% transparent */ opacity(1) /* No effect */
Specifications
Specification | Status |
---|---|
Filter Effects Module Level 1 The definition of 'opacity()' in that specification. |
Working Draft |