I have a 100 page PDF document that I need to print. My print shop needs to be told which pages contain color. I don't want to scan manually. Is there a program that detects pages with color and can ouput the page number?
Found this over at http://root42.blogspot.de/2012/10/counting-color-pages-in-pdf-files.html
gs -o - -sDEVICE=inkcov input.pdf | grep -v "^ 0.00000 0.00000 0.00000" | grep "^ " | wc -l
Worked well for me
Total page count can be found by
pdfinfo input.pdf | grep Pages:
On Linux (and probably mac/other Unix), the following very short BASH script seems to do the trick:
#!/bin/bash file="$1" for page in $(identify -density 12 -format '%p ' "$file") ; do if convert "$file[$((page-1))]" -colorspace RGB -unique-colors txt:- | sed -e 1d | egrep -q -v ': \(\s*([0-9]*),\s*\1,\s*\1' ; then echo $page fi done
Name the script something like
coloredpages.sh, and make it executable with
chmod +x coloredpages.sh and then run
./coloredpages.sh "pdfname.pdf" and it should return a list of page numbers.
This requires ImageMagick and probably Ghostscript to be installed. And it's not the speediest thing in the world.
Sorry, I have no clue how to adapt this for Windows (without Cygwin or similar, anyway).
Having the same task as the OP and working in Windows, I've found the following solution to work quickly and nicely: Spool File Page Counter SDK is non-free but the evaluation version still does the job. Download the zip file from the above link, unzip it and run
bin/C#_ParsingTest yourfile.pdf. You'll see something like
Page 1 is [ BW] Page 2 is [Color] ... Page 143 is [Color] ============ Statistics: bwPageCount=99, colorPageCount=44
The Rapid PDF Count mentioned in another answer here requires installation (which for my one-time job---dissertation printing) is a disadvantage. However it also does the job and provides a GUI. After installing it, run it, drag-and-drop the PDF file into it, check
Color Pages Counting in Setup/Options, then click the
Page count files in list button.
Interestingly, the results for my thesis differ by 1 page (99/44 vs. 100/43). I believe, this is because some figure (I made all with Inkscape) is actually black-and-white but is described as colour in metadata. I am not sure. What I didn't find in Rapid PDF Count is a list of all colour/B&W pages, so I cannot tell the exact source of this discrepancy.