Adobe Reader and Acrobat include plug-ins that both 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... 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

The easiest way to do this is at the COS level. The 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... Read More