The command line below specifies the input (/S) and output (/T) files. Notice the use of the "*" character to specify a whole folder of pdf files. The /R further specifies to do all sub folders. Pages 2-5 (/1 2-5) of the PDF are to be converted. 75% Quality (/4 75) and 200 DPI resolution (/5 200) are specified as well. Lastly, the /V switch is used to give on-screen confirmation of how the conversion went.
ConvertPDFToImage.exe /S "C:\Input\*.pdf" /T "C:\Output\*.PNG" /1 2-5 /5 200 /R /V
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