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/SVG

<feComponentTransfer>

The <feComponentTransfer> SVG filter primitive performs color-component-wise remapping of data for each pixel. It allows operations like brightness adjustment, contrast adjustment, color balance or thresholding.

The calculations are performed on non-premultiplied color values. The colors are modified by changing each channel (R, G, B, and A) to the result of what the children <feFuncR>, <feFuncB>, <feFuncG>, and <feFuncA> return. If more than one of the same element is provided, the last one specified is used, and if no element is supplied to modify one of the channels, the effect is the same is if an identity transformation had been given for that channel.

Usage context

Categories Filter primitive element
Permitted content Any number of the following elements, in any order:
<feFuncA>, <feFuncR>, <feFuncB>, <feFuncG>

Attributes

Global attributes

Specific attributes

DOM Interface

This element implements the SVGFEComponentTransferElement interface.

Example

SVG

<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 600 300">
  <defs>
    <linearGradient
      id="rainbow"
      gradientUnits="userSpaceOnUse"
      x1="0"
      y1="0"
      x2="100%"
      y2="0">
      <stop offset="0" stop-color="#ff0000"></stop>
      <stop offset="0.2" stop-color="#ffff00"></stop>
      <stop offset="0.4" stop-color="#00ff00"></stop>
      <stop offset="0.6" stop-color="#00ffff"></stop>
      <stop offset="0.8" stop-color="#0000ff"></stop>
      <stop offset="1" stop-color="#800080"></stop>
    </linearGradient>
    <filter id="identity" x="0" y="0" width="100%" height="100%">
      <feComponentTransfer>
        <feFuncR type="identity"></feFuncR>
        <feFuncG type="identity"></feFuncG>
        <feFuncB type="identity"></feFuncB>
        <feFuncA type="identity"></feFuncA>
      </feComponentTransfer>
    </filter>
    <filter id="table" x="0" y="0" width="100%" height="100%">
      <feComponentTransfer>
        <feFuncR type="table" tableValues="0 0 1 1"></feFuncR>
        <feFuncG type="table" tableValues="1 1 0 0"></feFuncG>
        <feFuncB type="table" tableValues="0 1 1 0"></feFuncB>
      </feComponentTransfer>
    </filter>
    <filter id="discrete" x="0" y="0" width="100%" height="100%">
      <feComponentTransfer>
        <feFuncR type="discrete" tableValues="0 0 1 1"></feFuncR>
        <feFuncG type="discrete" tableValues="1 1 0 0"></feFuncG>
        <feFuncB type="discrete" tableValues="0 1 1 0"></feFuncB>
      </feComponentTransfer>
    </filter>
    <filter id="linear" x="0" y="0" width="100%" height="100%">
      <feComponentTransfer>
        <feFuncR type="linear" slope="0.5" intercept="0"></feFuncR>
        <feFuncG type="linear" slope="0.5" intercept="0.25"></feFuncG>
        <feFuncB type="linear" slope="0.5" intercept="0.5"></feFuncB>
      </feComponentTransfer>
    </filter>
    <filter id="gamma" x="0" y="0" width="100%" height="100%">
      <feComponentTransfer>
        <feFuncR type="gamma" amplitude="4" exponent="7" offset="0"></feFuncR>
        <feFuncG type="gamma" amplitude="4" exponent="4" offset="0"></feFuncG>
        <feFuncB type="gamma" amplitude="4" exponent="1" offset="0"></feFuncB>
      </feComponentTransfer>
    </filter>
  </defs>
  <g font-weight="bold">
    <text x="0" y="20">Default</text>
    <rect x="0" y="30" width="100%" height="20"></rect>
    <text x="0" y="70">Identity</text>
    <rect
      x="0"
      y="80"
      width="100%"
      height="20"
      style="filter:url(#identity)"></rect>
    <text x="0" y="120">Table lookup</text>
    <rect
      x="0"
      y="130"
      width="100%"
      height="20"
      style="filter:url(#table)"></rect>
    <text x="0" y="170">Discrete table lookup</text>
    <rect
      x="0"
      y="180"
      width="100%"
      height="20"
      style="filter:url(#discrete)"></rect>
    <text x="0" y="220">Linear function</text>
    <rect
      x="0"
      y="230"
      width="100%"
      height="20"
      style="filter:url(#linear)"></rect>
    <text x="0" y="270">Gamma function</text>
    <rect
      x="0"
      y="280"
      width="100%"
      height="20"
      style="filter:url(#gamma)"></rect>
  </g>
</svg>

CSS

rect {
  fill: url(#rainbow);
}

Result

Specifications

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
feComponentTransfer Yes 12 Yes Yes Yes No Yes Yes Yes No No Yes
in Yes 12 Yes Yes Yes No Yes Yes Yes No No Yes

See also

© 2005–2023 MDN contributors.
Licensed under the Creative Commons Attribution-ShareAlike License v2.5 or later.
https://developer.mozilla.org/en-US/docs/Web/SVG/Element/feComponentTransfer