I.R.I.S. Readiris 14 for Windows User Guide - Manual (Page 92)

Readiris TM 14 – User Guide
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S
ECTION
9: S
AVING
D
OCUMENTS
S
AVING
D
OCUMENTS
The documents you process with Readiris can be saved in a large
number of output formats, ranging from plain text files to fully
formatted Word and Excel files, and also PDF and XPS files.
With Readiris you can also turn Image PDFs - in which you cannot
select or copy any text - into fully text-searchable PDF documents.
The same goes for Image XPS documents.
Below you find an overview of the supported output formats.

PDF
PDF stands for "Portable Document Format". It is a format
developed by Adobe System Inc. to facilitate document exchange.
PDF files are device-independent and resolution-independent, and
can be opened on any Operating System (Windows, Mac OS,
Linux, iOS, Android, etc.) PDF files are mostly used for storage
purposes. Note that the content of PDF files cannot be edited
(easily).
With Readiris you can generate 4 types of PDF files:

PDF Image-Text (= PDF Searchable Image) This file
type is most commonly used. It contains two layers: the
recognized text, and the original image on top of the
text. This way, you have both access to the recognized
text and you still see the original image.