to

The to attribute indicates the final value of the attribute that will be modified during the animation. The value of the attribute will change between the from attribute value and this value.

Five elements are using this attribute: <animate>, <animateColor>, <animateMotion>, <animateTransform>, and <set>

<svg viewBox="0 0 200 200" xmlns="http://www.w3.org/2000/svg">
  <rect x="10" y="10" width="100" height="100">
    <animate attributeType="XML" attributeName="width" fill="freeze"
        from="100" to="150" dur="3s"/>
  </rect>
</svg>

animate, animateColor, animateMotion, animateTransform

For <animate>, <animateColor>, <animateMotion>, and <animateTransform>, to specifies the ending value of the animation.

The exact value type for this attribute depend on the value of the attribute that will be animated.

If a list of values is defined via the values attribute, the to attribute is ignored.

set

For the <set> element, to specifies the value for the attribute during the duration of the element.

The exact value type for this attribute depend on the value of the attribute that will be animated.

Specifications