$pdf- > Image (), just calculate the position of x and y, and generally determine the size of the picture. The following is used when I used it recently. You can refer to

   public function createSeal($filePath,$w=20,$h=20,$padding_right=15){
        $pic_x = max(0,$this->getPageWidth()-$w-$padding_right);
        $pic_y = max(0,$this->getY()-20);
        $this->Image($filePath,$pic_x,$pic_y,$w,$h);
    }

if you can output that seal as a picture.

excuse me, how to display the picture in the lower left corner of the last page (or the specified number of pages)