Empty space (without characters and lines) to place an annotation

Maybe via VBA together with API to Acrobat?

Hello ls_rbls,

ok, sure, here one snippet:

var page = 0;
var StampH=110; //hight of the stamp
var StampB=240; //width of the stamp
var stringToSearchFor ="Date"; //the searched string to start the determination of the area, is specified by user at the beginning
var q = [0,0,0,0,0,0,0,0]; //Quad coordinates for one search string
var wortQ=[0,0,0,0,0,0,0,0]; //Quad coordinates for check string 
var deltaY=0;
var deltaX=0;
var pageRotation=this.getPageRotation(page); //drawings can be rotated, for this the transformation
var m = (new Matrix2D).fromRotated(this,page);
var mInv = m.invert();
//search for quads of search string and then take upper left corner, 
for (var n = this.getPageNumWords(page)-1; n >=0 ; n--) {
  if (this.getPageNthWord(page, n) == stringToSearchFor) {
  q = this.getPageNthWordQuads(page,n);
  q = mInv.transform(q); 
  q = q.toString();
  q = q.split(",");
  q[0]=parseFloat(q[0]);
  q[1]=parseFloat(q[1]);
  break;
  }
}
//search for strings (length >3 char) upper left corner if in area StampH x StampB
for (n = this.getPageNumWords(page)-1; n >=0 ; n--) {
  if (this.getPageNthWord(page, n).length>3){
    wortQ = this.getPageNthWordQuads(page,n);
    wortQ = mInv.transform(wortQ); 
    wortQ = wortQ.toString();
    wortQ = wortQ.split(",");
    wortQ[0]=parseFloat(wortQ[0]);
    wortQ[1]=parseFloat(wortQ[1]);
    deltaY=wortQ[1]-q[1];
    deltaX=q[0]-StampB/2;
    //if the distance to the next word more than 1.5*StampH save the last coordinates
    if (q[1]<wortQ[1] && deltaX<=wortQ[0] && (deltaX+1.2*StampB)>=wortQ[0] && deltaY<=1.5*StampH){
      if (deltaY>=StampH){
        break;
      }
    q[1]=wortQ[1];
    }
  }
}
q[1]=q[1]+StampH/2;
q = m.transform(q);
var StampX_Mid = q[0];
var StampY_Mid = q[1];
// apply the stamp
var annot = this.addAnnot({
  page: page,
  type: "Stamp",
  rotate: pageRotation,
  rect: [	StampX_Mid,
		StampY_Mid, 
		StampX_Mid, 
		StampY_Mid],
  AP: "#Stamp", //should be the name of an existing stamp
  });

 Please do not be too hard about the code 🙂

As far as empty strings or spaces are you using any type of richText formatting in these annotations? Are these annotation free text annnotations or actual comments?

The annotation is a stamp with known dimensions

And when you mention about drawings are you referring to the shapes? (such as arrows, shapes, etc?)

Yes i mean the shapes too, lines, pionts and so on.

Best Regards,

Evgenij