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

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

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

The recommended approach to redact content, including Text and other elements, is to utilize Redaction annotations, which is a two-step process. Redaction annotations are first placed on a page and then applied, which will cause any content... Read More

In Adobe C/C++, add the member flattenNoLimit to the PDPageDrawParams structure.  This will help if lines are missing from your output file. When this value is set to True, Adobe PDF Library will ignore some limits on the Flattener to ensure the... Read More

Adobe PDF Library does not offer a single interface that will allow control of both Optional Content and Annotations at the same time for a PDF document. In Adobe C/C++, PDPageDrawContentsToMemory() allows selection of Annotation faces, but does not... Read More

If the input document was originally rendered with no smoothing or antialiasing of any kind, you are essentially starting with a lot of glyphs that all have extremely rough edges, being rendered with nothing but black or white squares. If this is... Read More

Dynamic XFA PDF forms contain backup placeholder content in addition to the XFA data describing the fields and content of the form. The placeholder content can vary but is typically a warning to upgrade or use Adobe Reader.  When a dynamic XFA PDF... Read More