I.R.I.S. Readiris 14 for Windows User Guide - Manual (Page 68)

Readiris TM 14 – User Guide
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Readiris supports the following image file formats.
Image File Format File Extension
Adobe PDF *.pdf
DCX fax *.dcx
DjVu images *.djv, *.djvu
JPEG images *.jpg, *.jpeg
JPEG 2000 images *.j2c, *.j2k, *.jp2
Portable Network Graphics *.png
(Compressed and multipage)
TIFF images uncompressed
and LZW, PackBits, Group
3, Group 4 and JPEG
compressed *.tif, *.tiff
Windows bitmap *.bmp
ZSoft Paintbrush images *.pcx
To open existing image files:

Click the From File button.

Then select the images files you want to process, and click
Open.