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

Suppose you want to create only a cyan or magenta color separation from an image in a PDF document. PDPageMakeSeparations() will provide PostScript separations. Datalogics offers several sample programs that demonstrate working with color separations... 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

You can draw objects from a PDF document to a window in a specific order. You could draw out of the text stream first, then a graphic, and then a vector image. For example, you might want to render the text objects in a PDF document, and leave out... Read More

Adobe Reader and Acrobat include plug-ins that allow users to include and display 3D image graphics within PDF documents for engineering and computer-aided manufacturing processes, by converting native CAD/CAM formats into file formats that Adobe... Read More

PPI, or Pixels per Inch, measures the resolution of bitmap images. The image itself consists of a series of pixels which are “captured” at some given resolution. Technically, an image in a PDF does not have its own DPI value, though some tools,... Read More

In Adobe C/C++, a PDEImage can be created using DLPDECreatePDEImageFromFile() and manipulated with DLPDEImageTranslate, DLPDEImageRotate and DLPDEImageScale. The new image element can be added to the Content stream with PDEContentAddElem(). See the... Read More

An image XObject is a COS stream object. The stream dictionary holds entries that give the number of rows and the width of a row in pixels. Other entries describe the color model in use and the line and row progression. Image XObjects are described... Read More

In Adobe C/C++, smoothing options can be set via global values with the function PDPrefSetAntialiasLevel or by setting flags on (some) rendering calls. PDPrefSetAntialiasLevel PDPrefSetAntialiasLevel() accepts the antialiasPixelLevel paramater which... Read More

Color profiles are standards for managing colors, used to guarantee that the colors for text or graphics in a file remain the same regardless of the hardware or software used to display, edit, or print that file. A color profile is usually included... Read More