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flood-opacity

The flood-opacity attribute indicates the opacity value to use across the current filter primitive subregion.

Note: As a presentation attribute, flood-opacity can be used as a CSS property.

You can use this attribute with the following SVG elements:

Example

<svg viewBox="0 0 420 200" xmlns="http://www.w3.org/2000/svg">
  <filter id="flood1">
    <feFlood
      flood-color="seagreen"
      flood-opacity="1"
      x="0"
      y="0"
      width="200"
      height="200" />
  </filter>
  <filter id="flood2">
    <feFlood
      flood-color="seagreen"
      flood-opacity="0.3"
      x="0"
      y="0"
      width="200"
      height="200" />
  </filter>

  <rect x="0" y="0" width="200" height="200" style="filter: url(#flood1);" />
  <rect
    x="0"
    y="0"
    width="200"
    height="200"
    style="filter: url(#flood2); transform: translateX(220px);" />
</svg>

Usage notes

Value <alpha-value>
Initial value 1
Animatable Yes
<alpha-value>

A number or percentage indicating the opacity value to use across the current filter primitive subregion. A number of 0 or a percentage of 0% represents a fully transparent color, 1 or 100% represents a fully opaque color.

Specifications

Specification
Filter Effects Module Level 1
# FloodOpacityProperty

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
flood-opacity No No No No No No No No No No No No

See also

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Licensed under the Creative Commons Attribution-ShareAlike License v2.5 or later.
https://developer.mozilla.org/en-US/docs/Web/SVG/Attribute/flood-opacity