shape-image-threshold

The shape-image-threshold CSS property sets the alpha channel threshold used to extract the shape using an image as the value for shape-outside.

Any pixels whose alpha component’s value is greater than the threshold are considered to be part of the shape for the purposes of determining its boundaries. For example, a value of 0.5 means that the shape will enclose all the pixels that are more than 50% opaque.

Values: <alpha-value> Sets the threshold used for extracting a shape from an image. The shape is defined by the pixels whose alpha value is greater than the threshold. Values outside the range 0.0 (fully transparent) to 1.0 (fully opaque) are clamped to this range.

Syntax example: shape-image-threshold: 0.7;