Scaling the output image generated using PDF to Image

[Support]

Q: Image Scaling - I can set the dpi or use hres/vres to determine the
output size of my image file. But, if I wish to create an image with
a size that is some percentage of the original PDF (i.e. 150%, 200%,
etc), I must know the dimensions of the original PDF. Is there a way
to tell the SDK that I wish my image to be 100%, 150%, 200%, etc. of
the original PDF?

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A: Unlike raster images (i.e. the product of PDF2Image processing)
PDF format is device independent and it does not have any specific
resolution or DPI set. If you want to render using the resolution of
the PDF unit (point, where 1pt = 1/72 of an inch) you can use 72 DPI
for 1-1 correspondence, 144 DPI for 100% larger image, 180 DPI for
250% larger image, etc.