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How can I get the word count of a PDF file? I think that most pdf files for which I want to get total word count have text layer embedded, so I need no OCR.

The task was arisen from searching for some scientific papers of known size, e.g. 15000 words. Most moders papers are published in pdf format

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up vote 39 down vote accepted

Quick Answer:

pdftotext myfile.pdf - | wc -w

Long Answer:

If on Unix, you can use pdftotext:

and then do the word count in the generated file. If on Unix, you can use:

wc -w converted-pdf.txt

to get the word count.

Also, see the comment by frabjous - basically, you can do it in one step by piping to stdout instead to a temporary file:

pdftotext myfile.pdf - | wc -w
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It's pdftotext : don't forget the e. And you can use a single command: pdftotext myfile.pdf - | wc -w. – frabjous Dec 13 '10 at 4:15
@frabjous Thanks, updated the answer with the suggestions! – Dec 14 '10 at 1:48

I just tried out a free program, Translator's Abacus. You can drag and drop various file types (including PDF), and it pops up a browser with a printable report of the word count for each document. It worked fine for me. (It is specifically created for word counts and is only 435 KB... that is, not a "big application"). Translator's Abacus doesn't work on PDF 1.5 or later.

Alternatively: you can just Ctrl+A to select all text in Acrobat Reader and then copy-paste it into a program like Microsoft Word (which has a word count on the status bar at the bottom of the screen).

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Thanks. That's what I was looking for. – RoflcoptrException Apr 7 '11 at 7:38
In (many?) PDFs, Crl+A only selects the words on the current page, not the entire document. The Translator's Abacus works perfectly though, great! – Junuxx Oct 8 '12 at 12:44
Correction, Translator's Abacus doesn't work on PDF 1.5 or later. – Junuxx Oct 8 '12 at 12:55
+1 Ctrl+A in Adobe Reader together with WinMerge work great in Windows! – superjos Mar 4 '13 at 10:43

This is a hard task not not easy to solve. If you really want an exact result, copy paragraph by paragraph for your PDF viewer into a text file and check it with the wc -w tool. The reason why not to use pdftotext in that case is: mathematical formulas may get also into the output and regarded as "words". (Alternatively you could edit the output you get from pdftotext). Another reason why this may fail are the headings: "4.3.2 Foo Bar" is counted as three words.

A way around is only to count words starting with a char out of [A-Za-z]. So what I usally do is a two step approach:

  1. get the list of uniq words and check if there are too much false positives inside:

    pdftotext foo.pdf - | tr " " "\n" | sort | uniq | grep "^[A-Za-z]" > words

    I don't use a dictionary here, as some spelling errors would not count as words.

  2. Get this word list and grep it within the output of pdftotext:

    pdftotext foo.pdf - | tr " " "\n" | grep -f words | wc -l

I know this could be done within a one liner, but then I could not easily see the filter result from the first step.

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You can install OCRFeeder. In it choose File->Import PDF->Automatically detect and recognize all pages->Export to ODT and libreoffice writer document will be ready for word count or any other RTF function you will want to use.

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I find the word counter included in abracadabra tools convenient. The installation is a bit quirky though.

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A straightforward way to do this if you using Acrobat Pro is to export the PDF to a Microsoft Word document and then do the word count in Word. Alternatively, you can export it to a plain text file and use a word count utility in the text editor of your choice/. I just did a word count on a pdf article using the Word method and it took all of 30 seconds to complete.

Hope this helps.

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Ctrl+Shift+F enter advanced search type the word and it will count how many times it is in the doc. It is not rocket science.

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I think you've misunderstood the question... 'word count' normally refers to the total number of words in a document, rather than the number of a specific word... and also, I think it would be better if you were to specify which program you are talking about - not all PDF readers have the same functions or use the same keyboard shortcuts. – evilsoup Mar 28 '13 at 19:07
You may not have answered the OPs answer but your post certainly helped me. Thanks. :D – mahela007 Jul 1 '15 at 17:08

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