How to count word in pdf file

Shubham Agrawal

9y3.3k.NET

I have an Question.

i just Want to read pdf data. then i match the maximum similar word in pdf with some Word.

Like Sql word are common in Sql tutorial pdf file.so i just want to count the sql word in pdf.

then i want to share the pdf according to maximum word to sql Teacher.so how is it possible. if Anyone have Idea about this so plz share with me asap.

6 Replies

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Mageshwaran R6y ago
Hi,
please check this link:
https://www.codeproject.com/Questions/309676/Count-Number-of-Words-in-PDF
Somit Vishwakarma6y ago
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Usman Aziz7y ago
This is how you can count the number of occurrences of each word in a PDF document in C#.
using GroupDocs.Parser; // Get GroupDocs.Pasrer from NuGet or download from https://downloads.groupdocs.com
using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;

using (Parser parser = new Parser("sample.pdf"))
{
    // Extract a text into the reader
    using (TextReader reader = parser.GetText())
    {
        Dictionary<string, int> stats = new Dictionary<string, int>();
        string text = reader.ReadToEnd();
        char[] chars = { ' ', '.', ',', ';', ':', '?', '\n', '\r' };
        // split words
        string[] words = text.Split(chars);
        int minWordLength = 2;// to count words having more than 2 characters

        // iterate over the word collection to count occurrences
        foreach (string word in words)
        {
            string w = word.Trim().ToLower();
            if (w.Length > minWordLength)
            {
                if (!stats.ContainsKey(w))
                {
                    // add new word to collection
                    stats.Add(w, 1);
                }
                else
                {
                    // update word occurrence count
                    stats[w] += 1;
                }
            }
        }

        // order the collection by word count
        var orderedStats = stats.OrderByDescending(x => x.Value);
        // print total word count
        Console.WriteLine("Total word count: {0}", stats.Count);
        // print occurrence of each word
        foreach (var pair in orderedStats)
        {
            Console.WriteLine("Total occurrences of {0}: {1}", pair.Key, pair.Value);
        }
    }
}
Mohamed Abedallah9y ago
Since .NET classes don’t natively support PDF files, you need a toolkit that can handle PDF files.

- If the file is searchable PDF files, you can parse the PDF pages and get the text object from it. Then you read these text objects as string and put them in a list and count the frequency of any word you want.
- If the PDF file is not searchable (PDF pages are consist of images), then you need to OCR the PDF file and retrieve the text. Then count the frequency of any word you want.

LEADTOOLS has PDF parser and OCR features, and you can check these features in their online demo.
https://demo.leadtools.com/JavaScript/DocumentViewer/index.html
Uehara Ayaka9y ago
Hi, i'd suggest that you extract text from PDF and save as a .txt file, and then count number of words in the .txt file.

Extract text to .txt file
https://www.e-iceblue.com/Tutorials/Spire.PDF/Spire.PDF-Program-Guide/How-to-Extract-Text-from-PDF-Document-with-C-/VB.NET.html

Count number of words in .txt file
https://stackoverflow.com/questions/13242328/counting-number-of-words-in-a-text-file
Ankit Sharma9y ago
Hi Shubham,

You can take some references from here

https://stackoverflow.com/questions/9929279/to-count-the-frequency-of-each-word

https://stackoverflow.com/questions/6734374/get-only-word-count-from-pdf-document

following link shows a working example on text file. you can extend it to pdf file

https://r3dux.org/2012/10/how-to-count-word-occurences-in-a-string-or-file-using-csharp/