How to down scale content of a pdf?

Question

i have a pdf which I need to down scale. The pdf is in A4 portrait mode, what I need is to shrink the content of the pdf to 5 % and put this into a new PDF also in size A4 a

Answer 1

Answer for PDFBox 2.0.*:

try (PDDocument doc = PDDocument.load(new File("...")))
{
    for (int p = 0; p < doc.getNumberOfPages(); ++p)
    {
        PDPage page = doc.getPage(p);
        try (PDPageContentStream cs = new PDPageContentStream(doc, page, AppendMode.PREPEND, true))
        {
            cs.saveGraphicsState();
            cs.transform(Matrix.getScaleInstance(0.05f, 0.05f));
            cs.saveGraphicsState();
        }
        try (PDPageContentStream cs = new PDPageContentStream(doc, page, AppendMode.APPEND, true))
        {
            cs.restoreGraphicsState();
            cs.restoreGraphicsState();
        }
    }
    doc.save(new File("...."));
}

You'll see something tiny in the bottom left.