I've created an example that turns off the visibility of a specific layer. See ChangeOCG.
The concept is really simple. You already have a
PdfReader object and you want to apply a change to a file.
As documented, you create a
PdfStamper object. As you want to change an OCG layer, you use the
method and you select the layer you want to change by name. (In my example, the layer I want to turn off is named
"Nested layer 1"). You use the
setOn() method to change its status, and you're done:
PdfReader reader = new PdfReader(src); PdfStamper stamper = new PdfStamper(reader, new FileOutputStream(dest)); Map<String, PdfLayer> layers = stamper.getPdfLayers(); PdfLayer layer = layers.get("Nested layer 1"); layer.setOn(false); stamper.close(); reader.close();
This is Java code. Please read it as if it were pseudo-code and adapt it to your language of choice.