OK, so it appears that creating a new field instance solved this. I used this thread as a reference for anybody facing similar challenge: http://stackoverflow.com/questions/22073137/how-to-set-the-text-of-a-pdtextbox-to-a-color
________________________________ From: eli colner <[email protected]> To: "[email protected]" <[email protected]> Sent: Wednesday, March 5, 2014 2:08 PM Subject: Changing font of PDTextbox How is it possible to change the font of a textbox? I tried PDDocument pdf = PDDocument.load(originalPdf); PDDocumentCatalog docCatalog = pdf.getDocumentCatalog(); PDAcroForm acroForm = docCatalog.getAcroForm(); PDField field = acroForm.getField( "topmostSubform[0].Page1[0].Entity[0].p1-t4[0]" ); field.getDictionary().setString(COSName.DA, PDType1Font.COURIER.getBaseFont()); field.setValue("Testing font change"); I also searched for the answer to this and couldn't figure it out. https://www.google.com/search?as_q=textbox+font&as_epq=&as_oq=&as_eq=&as_nlo=&as_nhi=&lr=&cr=&as_qdr=all&as_sitesearch=http%3A%2F%2Fmail-archives.apache.org%2Fmod_mbox%2Fpdfbox-users%2F&as_occt=any&safe=images&tbs=&as_filetype=&as_rights= Any help would be much appreciated.

