1. Scans pages 1-3 and save unique images as JPG files.
pdfimages.exe -f 1 -l 3 -j -u d:\mypdf.pdf
2. Scans all pages and only returns a list of all image names, page numbers, width/height, DPI (as drawn), colorpsace and bits per component (BPC).
pdfimages.exe -listonly d:\mypdf.pdf
Try it
List embedded images in a PDF
Run 'pdfimages -list' against the selected PDF to enumerate every embedded image with its page, dimensions, color space, encoding, and storage size. No images are extracted; this is a metadata listing.
# PDFImages - Help
Source: https://www.xpdfreader.com/download.html
```
pdfimages version 4.03 [www.xpdfreader.com]
Copyright 1996-2021 Glyph & Cog, LLC
Usage: pdfimages [options] <PDF-file> <image-root>
-f <int> : first page to convert
-l <int> : last page to convert
-j : write JPEG images as JPEG files
-raw : write raw data in PDF-native formats
-list : write information to stdout for each image
-opw <string> : owner password (for encrypted files)
-upw <string> : user password (for encrypted files)
-q : don't print any messages or errors
-cfg <string> : configuration file to use in place of .xpdfrc
-v : print copyright and version info
-h : print usage information
-help : print usage information
--help : print usage information
-? : print usage information
```
