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

BCD tables only load in the browser

See also