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Permalink Reply by Baskar Selvaraj on February 16, 2016 at 15:09

Try ExitTool

http://www.sno.phy.queensu.ca/~phil/exiftool/

I have been using it for extracting metadata from PDFs for using in DSpace.  It is possible to extract metadata from all PDFs at one go, if you are familiar with command line options.

S. Baskar

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Permalink Reply by Subeesh A C on February 17, 2016 at 0:25

Thank you very much sir

But I think the tool is extracting data from document properties in my try. Are you getting the appropriate data with exiftool?

Subeesh A C

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Permalink Reply by Baskar Selvaraj on February 17, 2016 at 4:45

Hi,

Using the below command, you can extract all metadata (i.e. all metadata tags associated with the PDF document) from hundreds of PDF documents and save it as CSV file which could be used for doing batch import within DSpace.  

In case, if you require only specific tags, then you have to mention the required metadata tags for extracting.  I have given an example below for your understanding.

To extract all available metadata tags from the PDF documents and save it as a CSV file

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exiftool -csv  *.pdf > output.csv

To extract specific metadata tags from the PDF documents and save it as a CSV file

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exiftool  -TAG -Title   -TAG -Author  -TAG -Producer  -TAG -Subject -TAG -Description -TAG -Type -TAG -Keywords -TAG -ISBN -TAG -Isbn -TAG -Createdate -TAG -CourseID  -TAG -FileSize -TAG -PageCount -TAG -PDFVersion -d %Y-%m-%d  *.pdf -csv > output.csv

Hope this helps.

S. Baskar

LinuXpert Systems

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Permalink Reply by Baskar Selvaraj on February 17, 2016 at 4:54

ExifTool Tag Names

The tables listed below give the names of all tags recognized by ExifTool.

http://www.sno.phy.queensu.ca/~phil/exiftool/TagNames/index.html

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Permalink Reply by Subeesh A C on February 20, 2016 at 19:27

Thank you very much sir

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Permalink Reply by Mujib Rahiman K U on February 17, 2016 at 18:34

I have created a small uitlity for extracting information from pdf files  few years ago . it will extract data from all files in a folder and save in tab delimited text file.

you can try it. hope it helps. pls let me know.

i have uploaded the program to google drive. Click here to download

with regards

Mujib Rahiman

KV Kanjikode

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Permalink Reply by Subeesh A C on February 20, 2016 at 19:28

Thanks sir, I will surely let you know.

Regards 

Subeesh A C

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Permalink Reply by Subeesh A C on February 22, 2016 at 23:38

Sir

I have checked your software, its a great effort if you have coded it yourself. As I see most of the software(s) are not able to identify the pdf files metadata as we require. I think the problem is mostly revolve around  the structure of pdf files itself. In my case the pdf files are not having any standard structure (+ OCR ) in it for the algorithm to extract as it did for any appropriate one. Since we are in hurry and we require more metadata for the current work, we are thinking of indexing it and filtering it later through various categories. Anyway thanks for your reply.

Regards 

Subeesh A C

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