The ICC profile name is part of the ICC stream embedded within the PDF document. The stream following the /ICCBased key is the ICC itself [ /ICCBased stream ]. You need to convert the stream to an ACProfile withACMakeBufferProfile() and then use the... Read More

The PDPrefSetWorkingRGB, PDPrefSetWorkingCMYK and PDPrefSetWorkingGray APIs tie the nominal DeviceRGB, DeviceCMYK and DeviceGray color gamut (respectively) to a specific ICC profile’s color gamut. Putting it another way, the designated Working... Read More

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

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 Color Information... 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

When your 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 file folders... 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 PDF Library 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