<mask>
The <mask>
element defines an alpha mask for compositing the current object into the background. A mask is used/referenced using the mask
property.
Example
html
<svg viewBox="-10 -10 120 120">
<mask id="myMask">
<!-- Everything under a white pixel will be visible -->
<rect x="0" y="0" width="100" height="100" fill="white" />
<!-- Everything under a black pixel will be invisible -->
<path
d="M10,35 A20,20,0,0,1,50,35 A20,20,0,0,1,90,35 Q90,65,50,95 Q10,65,10,35 Z"
fill="black" />
</mask>
<polygon points="-10,110 110,110 110,-10" fill="orange" />
<!-- with this mask applied, we "punch" a heart shape hole into the circle -->
<circle cx="50" cy="50" r="50" mask="url(#myMask)" />
</svg>
Attributes
height
-
This attribute defines the height of the masking area. Value type: <length> ; Default value:
120%
; Animatable: yes maskContentUnits
-
This attribute defines the coordinate system for the contents of the
<mask>
. Value type:userSpaceOnUse
|objectBoundingBox
; Default value:userSpaceOnUse
; Animatable: yes maskUnits
-
This attribute defines the coordinate system for attributes
x
,y
,width
andheight
on the<mask>
. Value type:userSpaceOnUse
|objectBoundingBox
; Default value:objectBoundingBox
; Animatable: yes x
-
This attribute defines the x-axis coordinate of the top-left corner of the masking area. Value type: <coordinate> ; Default value:
-10%
; Animatable: yes y
-
This attribute defines the y-axis coordinate of the top-left corner of the masking area. Value type: <coordinate> ; Default value:
-10%
; Animatable: yes width
-
This attribute defines the width of the masking area. Value type: <length> ; Default value:
120%
; Animatable: yes
Global attributes
- Core Attributes
-
Most notably:
id
- Styling Attributes
class
,style
- Conditional Processing Attributes
-
Most notably:
requiredExtensions
,systemLanguage
- Presentation Attributes
-
Most notably:
clip-path
,clip-rule
,color
,display
,fill
,fill-opacity
,fill-rule
,filter
,mask
,opacity
,shape-rendering
,stroke
,stroke-dasharray
,stroke-dashoffset
,stroke-linecap
,stroke-linejoin
,stroke-miterlimit
,stroke-opacity
,stroke-width
,transform
,vector-effect
,visibility
Usage notes
Categories | Container element |
---|---|
Permitted content | Any number of the following elements, in any order: Animation elements Descriptive elements Shape elements Structural elements Gradient elements <a> , <clipPath> , <color-profile> , <cursor> , <filter> , <font> , <font-face> , <foreignObject> , <image> , <marker> , <mask> , <pattern> , <script> , <style> , <switch> , <text> , <view> |
Specifications
Specification |
---|
CSS Masking Module Level 1 # MaskElement |
Browser compatibility
BCD tables only load in the browser
See also
- Other clipping and masking SVG elements:
<clipPath>
- Clipping and masking CSS properties:
mask
,mask-image
,mask-mode
,mask-repeat
,mask-position
,mask-clip
,mask-origin
,mask-composite
,mask-size
,pointer-events