opacity()
Baseline Widely available
This feature is well established and works across many devices and browser versions. It’s been available across browsers since September 2016.
The opacity()
CSS function applies transparency to the samples in the input image. Its result is a <filter-function>
.
Try it
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
css
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 initial value for interpolation is1
.
Examples
Examples of correct values for opacity()
css
opacity(0%) /* Completely transparent */
opacity(50%) /* 50% transparent */
opacity(1) /* No effect */
Specifications
Specification |
---|
Filter Effects Module Level 1 # funcdef-filter-opacity |
Browser compatibility
BCD tables only load in the browser
See also
- The other
<filter-function>
functions available to be used in values of thefilter
andbackdrop-filter
properties include: - The CSS
opacity
property