The bias attribute shifts the range of the filter. After applying the kernelMatrix of the <feConvolveMatrix> element to the input image to yield a number and applied the divisor attribute, the bias attribute is added to each component. This allows representation of values that would otherwise be clamped to 0 or 1.

Usage notes

Value <number>
Default value 0
Animatable Yes

One application of bias is when it is desirable to have 0.5 gray value be the zero response of the filter.


Specification Status Comment
Filter Effects Module Level 1
The definition of 'bias' in that specification.
Working Draft No change
Scalable Vector Graphics (SVG) 1.1 (Second Edition)
The definition of 'bias' in that specification.
Recommendation Initial definition

Browser compatibility

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biasChrome ? Edge ? Firefox ? IE ? Opera ? Safari ? WebView Android ? Chrome Android ? Firefox Android ? Opera Android ? Safari iOS ? Samsung Internet Android ?


Compatibility unknown  
Compatibility unknown