June 2013

One method is to render each page to an image file and then check each pixel for RGB values not equal to each other. If R=G=B for each pixel then it’s a grayscale image. This should allow you to determine if a PDF file is color or black and white. There isn’t a document wide […]

Foxit Quick PDF Library Lite is an ActiveX and so does not require an Instance ID. The Instance ID is only required by the DLL edition of the commercial version of Foxit Quick PDF Library. In addition, you do not need to — indeed, you cannot — call the UnlockKey function when using Quick PDF Library Lite […]