Hide page count from the go to section of the pdf toolbar when pdf is opened in browser

From java side I am converting tiff images to PDF like below.

        Rectangle pagesize = new Rectangle(maxWidth, maxHeight);
        Document document = new Document(pagesize);
        PdfWriter.getInstance(document, output);
        document.open();

        for (int imageIndex = 0; imageIndex < numPages; imageIndex++) {

            img = images.get(imageIndex);
            img.setAlignment(Image.MIDDLE);
            document.setPageSize(new Rectangle(maxWidth, maxHeight));
            document.add(img);
            document.newPage();
        }

        document.close();

and then from the angular side , I am using window.open to show the PDF file like this

.subscribe(fileUrl => {
        dialogRef.close();
        windowRef = window.open(..${fileUrl}#toolbar=0, '_blank', 'width=800,height=600');
            this.addToAttachmentManager(windowRef, processId);},
() => dialogRef.close());

When the pdf is opened in the browser , I want to hide the Total page count only from the pdf toolbar panel
reference img