9.7.  Extract Images from PDF

This utility extracts images imbedded in PDF document to PNG images. Each image is written to a separate file. Tests with those images are described in section 3.16: “Images in PDF Documents”.

Program Start

```::
:: Extract all images of a PDF document into a PNG file for each image.
::

@echo off
setlocal
set CLASSPATH=./lib/aspectj-1.8.7/*;%CLASSPATH%
set CLASSPATH=./lib/bouncycastle-jdk15on-153/*;%CLASSPATH%
set CLASSPATH=./lib/commons-logging-1.2/*;%CLASSPATH%
set CLASSPATH=./lib/pdfbox-2.0.0/*;%CLASSPATH%
set CLASSPATH=./lib/pdfunit-2016.05/*;%CLASSPATH%

set TOOL=com.pdfunit.tools.ExtractImages
set OUT_DIR=./tmp
set IN_FILE=imageDemo.pdf
set PASSWD=

java  %TOOL%  %IN_FILE%  %OUT_DIR%  %PASSWD%
endlocal```

Input

The input file `imageDemo.pdf` contains two images:

Output

After running the utility, two files are created:

```# created images:

.\tmp\_exported-image_imageDemo.pdf_Im4-0.out.png
.\tmp\_exported-image_imageDemo.pdf_Im12-1.out.jpg

```
 The number in the file name is the object number within the PDF document.