A single PDF document can support a wide variety of elements using different color models. Often a PDF file is produced and saved with elements in the DeviceRGB, DeviceCMYK and DeviceGray spaces that have an associated ICC profile. An element (such... Read More

The Adobe Color Engine (ACE) and the Windows Image Color Management (ICM) are two APIs that serve similar purposes but in different environments. ACE is required to set up and modify ICC profiles in PDF documents and the APDFL environment. ICM is... Read More

In Adobe C/C++, for Separation colors, the equivalents are retrieved by running the color value through the alternate color function using the PDApplyFunction() API. float inVal[4], tintTrans[4]; ... /* If this element has a GState, retrieve the... Read More

When your APDFL Adobe C/C++ application starts, it will call the PDFLInitHFT() method to begin the initialization process for the Library. When the Library initializes it compiles a list of all its available resources. In particular it identifies the... 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

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

The watermark object created by the Adobe C/C++ PDDocAddWatermarkFromText() API is a form XObject in the PDF document, with Optional Content with the name “/Watermark.” When creating a watermark using Adobe Acrobat, Acrobat will create a form... 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

Refrying is the process of converting a PDF file into PostScript (or EPS) and back again to PDF. Though this practice of at least a double conversion (PDF to PostScript then from PostScript back to PDF) is no longer as commonly used, our Support team... Read More

The Details Users may encounter an issue when utilizing the Extract Text API where the output contains problematic spaces after some special characters. This situation can lead to a less accurate representation of the text content within the PDF... Read More