A Forms Data Format (FDF) file is a text file used by Adobe Acrobat to hold values exported from PDF forms documents. The Adobe PDF Library views an FDF file as a COS document. As such, it can be opened by the Adobe PDF Library, and can be used with... Read More

Use this code to programmatically determine if a PDF document is an AcroForm: bool hasAcroFormFields = false;if(doc.Root.Contains("AcroForm")){var AcroFormDict = doc.Root.Get("AcroForm") as PDFDict;hasAcroFormFields = AcroFormDict.Contains("Fields") ... Read More

Using the Adobe PDF Library, you can access the XML structure behind an XFA form field. XFA, or XML Forms Architecture, is a set of proprietary XML specifications for use with web forms. XFA forms are saved within a PDF document. If you want to merge... Read More

Types of PDF Forms There are three primary types of PDF forms, each with distinct characteristics and use cases:   1. AcroForms Traditional and most common type of PDF forms. Created using tools like Adobe Acrobat.   2. Static XFA PDF Forms ... Read More

You can change the XMP metadata in a PDF/A compliant document to remove the PDF/A schema from that document. This will convert it into a non-conforming file. Add the code blocks provided below to your own application to edit a PDF document and make... Read More

The data that comprises a PDEPath object can be obtained from the PDEPathGetData() API. This is raw data containing the operands and operators (moveto, lineto, etc.) that draw the path. If you are trying to recognize the shape of the PDEPath,... Read More

You can list document properties for a PDF document found in the Document Information Dictionary. The properties stored in the Document Information Dictionary are are presented as a series of name/string couplets, each one a key with a value. Many of... Read More

To determine if a PDF document is a Portfolio, look at the document Root dictionary to see if “Collection” appears there. The /Root directory is part of the structure of the PDF document. In a Portfolio PDF document, multiple /Root directories... Read More

Controlling access to PDF content is essential for organizations looking to protect sensitive information. This guide explains how to apply restrictions to a PDF using Adobe PDF Library (APDFL) in a .NET Core environment, specifically to prevent... Read More

The iccProfilesDir and the iccProfilesStandardFolders are both parameters of NSClientData. NSClientData is an API that points to private client data. Private client data is a set of parameters that allow you to pass custom values to PDF Converter... Read More