Document doc = new Document("data/document.doc"); doc.protect(ProtectionType.READ_ONLY); // Following other Protection types are also available // ProtectionType.ALLOW_ONLY_COMMENTS // ProtectionType.ALLOW_ONLY_FORM_FIELDS // ProtectionType.ALLOW_ONLY_REVISIONS doc.save("data/AsposeProtect.doc", SaveFormat.DOC);