Extension that allow to stamp image (sticker image / watermark) on specific PDF page.

The rectangle of sticker on pdf page is identified by x, y, w, h:

• x: absolute position of left edge of the sticker compare to the width of pdf page, value range from 0.0 to 1.0. 0.0 means overlap with left edge of page, 1.0 means overlap with right edge.
• y: absolute position of the top edge of the sticker, value range from 0.0 to 1.0. Calculate follow the percentage of the height of the pdf page.
• w: width of the sticker bounding box. Value range from 0.0 to 1.0, ie: percentage of the width of pdf page
• h: height of the sticker bounding box. Value range from 0.0 to 1.0, ie: percentage of the height of pdf page.