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seed

Baseline Widely available

This feature is well established and works across many devices and browser versions. It’s been available across browsers since ⁨July 2015⁩.

The seed attribute represents the starting number for the pseudo random number generator of the <feTurbulence> filter primitive.

You can use this attribute with the following SVG elements:

Example

>

Example 1

<svg viewBox="0 0 420 200" xmlns="http://www.w3.org/2000/svg">
  <filter id="noise1" x="0" y="0" width="100%" height="100%">
    <feTurbulence baseFrequency="0.025" seed="0" />
  </filter>
  <filter id="noise2" x="0" y="0" width="100%" height="100%">
    <feTurbulence baseFrequency="0.025" seed="100" />
  </filter>

  <rect x="0" y="0" width="200" height="200" filter="url(#noise1)" />
  <rect x="220" y="0" width="200" height="200" filter="url(#noise2)" />
</svg>

Example 2

<svg
  width="200"
  height="200"
  viewBox="0 0 220 220"
  xmlns="http://www.w3.org/2000/svg">
  <filter id="displacementFilter">
    <feTurbulence baseFrequency="0.05" seed="1000" result="turbulence" />
    <feDisplacementMap
      in2="turbulence"
      in="SourceGraphic"
      scale="50"
      xChannelSelector="R"
      yChannelSelector="G" />
  </filter>

  <circle cx="100" cy="100" r="100" filter="url(#displacementFilter)" />
</svg>

Usage notes

Value <number>
Default value 0
Animatable Yes

Specifications

Specification
Filter Effects Module Level 1>
# element-attrdef-feturbulence-seed>

Browser compatibility

Desktop Mobile
Chrome Edge Firefox Opera Safari Chrome Android Firefox for Android Opera Android Safari on IOS Samsung Internet WebView Android WebView on iOS
seed 5
12Partially supported, see bug 12382004.
 3 9 6 18 4 14 6 1.0 4.4 6

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https://developer.mozilla.org/en-US/docs/Web/SVG/Reference/Attribute/seed