SVGFEConvolveMatrixElement: bias property

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 bias read-only property of the SVGFEConvolveMatrixElement interface reflects the bias attribute of the given <feConvolveMatrix> element.

Value

An SVGAnimatedNumber object.

Examples

Access the bias property

The bias property is used to adjust the brightness of the output.

html
<svg viewBox="0 0 200 200" xmlns="http://www.w3.org/2000/svg">
  <defs>
    <filter id="convolveFilterWithBias">
      <feConvolveMatrix
        in="SourceGraphic"
        order="3"
        kernelMatrix="0 -1 0 -1 5 -1 0 -1 0"
        bias="0.25" />
    </filter>
  </defs>
  <rect
    x="20"
    y="20"
    width="100"
    height="100"
    style="fill:lightblue;"
    filter="url(#convolveFilterWithBias)" />
</svg>
js
const convolveMatrix = document.querySelector("feConvolveMatrix");

console.log(convolveMatrix.bias.baseVal); // Output: 0.25

Specifications

Specification
Filter Effects Module Level 1
# dom-svgfeconvolvematrixelement-bias

Browser compatibility

Report problems with this compatibility data on GitHub
Chrome
Edge
Firefox
Opera
Safari
Chrome Android
Firefox for Android
Opera Android
Safari on iOS
Samsung Internet
WebView Android
WebView on iOS
bias

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Full support

See also