Overview When installing APDFL using NuGet, reference errors can occur if the incorrect package type is used or if different package types are combined in the same project. This document explains the differences between the available APDFL NuGet... Read More

This article applies only to the Licensed Managed (LM) release of APDFL, which requires a license file (apdfl.lic) to run. Running the licensed managed (LM) release of APDFL in a Docker container might result in an exception, the most common of which... Read More

Adobe PDF Library (PDFL) SDK Adobe PDF Library SDK (PDFL) is a robust C toolkit for programmatically creating, editing, converting, and managing PDF documents. Built on the same core technology used in Adobe Acrobat, it provides enterprise-grade... Read More

In the Adobe PDF Library (APDFL), a PDEForm is a subtype of PDEElement. This relationship allows a PDEForm to be treated like any other PDEElement within the PDF Edit (PDE) architecture. Understanding this hierarchy is key to effectively adding,... Read More

Overview After upgrading the Adobe PDF Library (APDFL) NuGet package in a .NET application, you may see this error: The type initializer for 'Datalogics.PDFL.PDFLPINVOKE' threw an exception. This message is the outer exception. The more... Read More

Overview Rendering a large PDF page at high resolution with Adobe PDF Library 18 can create a multi-gigabyte raster image. Users may experience long processing times, high memory consumption, application failures on memory-constrained systems, or... Read More

What is PDF/UA? PDF/UA (Universal Accessibility) is a set of specifications for making PDFs accessible to persons with disabilities by imposing additional requirements over the baseline PDF specifications: Specifically, ISO 14289-1:2014 for PDF v1.7 ... Read More

For this API: PDDocSetNewCryptHandler(document, ASAtomFromString("Standard")); The API Reference says: newCryptHandler - The ASAtom for the name of the new security handler to use for the document. This name must be the same as the pdfName used when... Read More

The standard security provided in a PDF document consists of two different methods, each with its own type of password. The User password controls the ability to open the document. This password encrypts the file and prevents someone without the... Read More

In order to change permission on a document, you must have a password that permits you to change permissions, and you must open the document with that password. Using Adobe C/C++, call PDDocGetPermissions() to see if you have the authority to change... Read More