overlay

This parameter takes image URL as its input. It overlays the image fetched from URL over the image being processed. The default option is to put the overlay at center. This can be modified with below parameters.

overlay_position=bottomleft

default position

overlay_position=bottomleft

default position

overlay_position

This parameter specifies position of image overlay.

Valid values are top, topleft, left, bottomleft, bottom, bottomright, right, topright and center.

overlay_top

Specifies overlay offset in number of pixels from top edge of image. This parameter overrides overlay_position.

overlay_left

Specifies overlay offset in number of pixels from left edge of image. This parameter overrides overlay_position.

overlay_tile

This boolean parameter repeats the overlay image like tiles over the image being processed. Default value is false.