I.R.I.S. IRIScompressor Pro Mac - Manual (Page 17)

Using IRISCompressor Pro
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Note: the images must contain text in order for IRISCompressor
to do the orientation.

Select Create one file per file in case you want to generate a
separate output file for each input file.
Step 5: Select the output format

Select PDF to generate compressed PDF output files.
Important note: Adobe Reader is recommended to open
compressed PDF files on a mobile OS (e.g. on an iPad or
Android tablet)

Select XPS to generate compressed XPS output files.

Then name the output file and save in the location of your
choice.
The default name is the name of the first image.
Note: IRISCompressor by default compresses all images in the
interface into 1 single output file, unless you selected the option
Create one file per file. In that case you have to name each
output file.
Notes:
The OCR settings and Advanced options you select in the interface
are saved automatically. Next time you use IRISCompressor it will
apply the same settings.