Optional Content is a feature that permits content to be made visible or invisible, based on switch set when being viewed in Adobe Acrobat or other viewing tool. Optional Content, or “layers,” are a useful way to present information when opening... Read More
APDFL: File Management
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
Your application must be able to read and parse the text input format, including HTML, XML, RTF, or Microsoft Word. The Library does not provide this service. After your application has read the input file and determined the specifications for the... Read More
The Library can extract text from a PDF document in two ways. You can enumerate the content of a page, which will give you all content, text and graphics, in the order it was specified. Or you can use a WordFinder utility to return a list of words,... Read More
The Relaxed Syntax flag with Adobe PDF Library 15 and 18 allows a developer to intentionally bypass invalid formatting when opening and working with input documents and PDF files. Setting this flag to “true” allows an application to correct... Read More
The Adobe PDF Library cannot read PostScript input files, including Encapsulated PostScript (EPS). So you will need to convert EPS documents to PDF before you want to apply them to your application. If you want to convert a single EPS file into a PDF... Read More
Adobe PDF Library honors any document security found in an input PDF document. If the document is password-protected, the application will need to provide the correct Owner or User password required to open it. If the document is opened with the... Read More
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
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