Blend X Position
blend-x
Positions the overlay layer horizontally, measured from the left edge of the base image in pixels.
The default value is 0. Note: blend-x is not applicable to color overlays—they apply to the entire image. Use blend-x[N] to style a specific additional blend layer — styles do not inherit across blend layers.
This parameter accepts a relative length: a whole number is pixels, and a decimal between -1 and 1 is a fraction of the base image’s width.