-webkit-mask-composite CSS property
Non-standard: This feature is not standardized. We do not recommend using non-standard features in production, as they have limited browser support, and may change or be removed. However, they can be a suitable alternative in specific cases where no standard option exists.
The -webkit-mask-composite property specifies the manner in which multiple mask images applied to the same element are composited with one another. Mask images are composited in the opposite order that they are declared with the -webkit-mask-image property.
Note:
There is a standardized mask-composite property covering parts of this non-standard property using different keywords.
Syntax
/* Keyword values */
-webkit-mask-composite: clear;
-webkit-mask-composite: copy;
-webkit-mask-composite: source-over;
-webkit-mask-composite: source-in;
-webkit-mask-composite: source-out;
-webkit-mask-composite: source-atop;
-webkit-mask-composite: destination-over;
-webkit-mask-composite: destination-in;
-webkit-mask-composite: destination-out;
-webkit-mask-composite: destination-atop;
-webkit-mask-composite: xor;
/* Global values */
-webkit-mask-composite: inherit;
-webkit-mask-composite: initial;
-webkit-mask-composite: revert;
-webkit-mask-composite: revert-layer;
-webkit-mask-composite: unset;
Values
clear-
Overlapping pixels in the source mask image and the destination mask image are cleared.
copy-
The source mask image replaces the destination mask image.
source-over-
The source mask image is rendered over the destination mask image.
source-in-
Overlapping pixels in the source mask image and the destination mask image are replaced by the pixels of the source mask image; all other pixels are cleared.
source-out-
Overlapping pixels in the source mask image and the destination mask image are cleared; all remaining pixels of the source mask image are rendered.
source-atop-
The pixels of the destination mask image are rendered. The pixels of the source mask image are rendered only if they overlap a nontransparent portion of the destination mask image. This causes the source mask image to have no effect.
destination-over-
The destination mask image is rendered over the source mask image.
destination-in-
Overlapping pixels in the source mask image and the destination mask image remain the pixels of the destination mask image; all other pixels are cleared.
destination-out-
Overlapping pixels in the source mask image and the destination mask image are cleared; all remaining pixels of the source mask image are rendered.
destination-atop-
The pixels of the source mask image are rendered. The pixels of the destination mask image are rendered only if they overlap a nontransparent portion of the destination mask image. This causes the destination mask image to have no effect.
xor-
Overlapping pixels in the source mask image and the destination mask image become fully transparent if they are both fully opaque.
Formal definition
| Initial value | source-over |
|---|---|
| Applies to | all elements |
| Inherited | no |
| Computed value | as specified |
| Animation type | discrete |
Formal syntax
-webkit-mask-composite =
<composite-style>#
Examples
Compositing with XOR
.example {
-webkit-mask-image: url("mask1.png"), url("mask2.png");
-webkit-mask-composite: xor, source-over;
}
Specifications
Not part of any standard. This property is specified as mask-composite using different values.
Browser compatibility
| desktop | mobile | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
-webkit-mask-composite
|
|
|
|
|
|
|
|
|
|
|
|
|
Legend
Tip: you can click/tap on a cell for more information.
- Full support
- Full support
- No support
- No support
- Non-standard. Check cross-browser support before using.