How to Extract Data from PDF in C#

Introduction

PDF stands for "portable document format" and is a universal standard for exchanging electronic documents. PDFs can be created, stored, sent, and viewed on all devices, making the file a perfect choice for formatting documents that need interactivity. The PDF file format is not just meant for storing electronic documents; it also supports features such as viewing, editing, and commenting on the document.

PDFs usually contain metadata such as the fonts used in the document, as well as page numbers. The data extracted from a PDF includes text objects, images, watermarks, and vector graphics such as animations or drawings. Extracting data from PDFs is crucial for saving time on manual inputting, and also because some organizations have policies related to documenting the origin of digital information. Typically, PDF exists as a file extension that communicates the content type to be opened in Adobe Acrobat or Adobe Reader software. Extracting data from a PDF refers to removing text, images, sounds, etc. from a PDF document — tasks which can be done in different ways, such as with scripts and plugins on the PC, and also by using third-party software on macOS machines.

PDFs have steadily evolved to the point that they have now become more than just documents for storing information — they are now used for communication purposes.

IronPDF: C# PDF Library

IronPDF C# PDF Library is a .NET library that can be used to create, edit and convert PDF files. It provides an easy-to-use API for developers to use in their applications. It is one of the most popular libraries for creating, editing, and converting PDF files globally. With IronPDF, you can create a straightforward and quick solution to PDFs. It provides a suite of functionalities specific to PDFs, giving you a straightforward and quick solution. Your text will be customized for each document, your layout will be set up for easy reading, and your graphics will be designed with help from the accompanying .NET program.

The IronPDF library has a fantastic feature for extracting data from PDF files. This article will look at how we can extract data using IronPDF. First of all, we have to create or open a C# Project. Let's move on to the next section.

You can download the software product from this link.

Create or Open a C# Project in Visual Studio

We are using the Visual Studio 2019 version. The latest version of the Visual Studio is recommended. Follow the steps below to create a C# Project in Visual Studio:

  • Open Visual Studio 2019.
  • Click on the "Create a new project" button.
  • Select the "C# Console Application" from the templates.
  • Give a name to the Project and click on the "Next" button.
  • Select the .NET core framework according to your project's requirements and click on the "Create" button.

It will create a C# .NET project. Now it is ready for the installation of the IronPDF library. We can also use an existing C# project with the IronPDF library. It is now time to install the IronPDF library, and in the next section, we will explore how to accomplish this easily.

Install the IronPDF Library

We can install the IronPDF library in multiple ways. We should choose the method which is most convenient, but both methods are straightforward.

Using Package Manager Console

Using the Package Manager console is very easy. Follow these steps to install IronPDF:

  • Open the package manager console. It is usually located at the bottom of Visual Studio.
  • Write the following command to install the IronPDF library:
Install-Package IronPDF
Install-Package IronPDF
'INSTANT VB TODO TASK: The following line uses invalid syntax:
'Install-Package IronPDF
VB   C#
  • Hit Enter after writing the command; you will be able to see the progress of the library installation.

After installation, you will see the IronPDF dependency in the dependencies section of solution explorer.

After installation, the project will be ready to use in the library.

Using NuGet Package Manager

The second way to install the IronPDF library is by using the UI of the NuGet Package Manager. Follow the given steps to install the IronPDF library using NuGet Package Manager:

  • Go to the Tools from the main menu. Hover on "NuGet Package Manager" from the drop-down menu and select the "NuGet Package Manager Solution".
  • This will open the NuGet Package Manager window. Go to the Browse tab, write IronPDF in search, and press Enter.
  • Select IronPDF from the search results and click on the "Install" button to begin the installation.

After installation, you must import the IronPDF namespace in order to be able to use it in your project. This is the most crucial step to begin working with IronPDF. Write the following line of code at the top of every file where you want to use IronPDF.

using IronPDF;
using IronPDF;
Imports IronPDF
VB   C#

Extract data from PDF files

We have set up our project and are ready to use the IronPDF library. We will look at how to extract data from PDF documents using IronPDF. Using this C# library, we can read PDF files, remove content, and extract high-quality and original images. Let's have a look at the following code to see how we can extract data using IronPDF:

//Rendering PDF documents to Images or Thumbnails
using IronPdf;
using System.Drawing;

//  Extracting Image and Text content from Pdf Documents

// open a 128 bit encrypted PDF
using PdfDocument PDF = PdfDocument.FromFile("encrypted.pdf", "password");

//Get all text to put in a search index
string AllText = PDF.ExtractAllText();

//Get all Images
IEnumerable<System.Drawing.Image> AllImages = PDF.ExtractAllImages();

//Or even find the precise text and images for each page in the document
for (var index = 0; index < PDF.PageCount; index++) {
    int PageNumber = index + 1;
    string Text = PDF.ExtractTextFromPage(index);
    IEnumerable<System.Drawing.Image> Images = PDF.ExtractImagesFromPage(index);
    ///...
}
//Rendering PDF documents to Images or Thumbnails
using IronPdf;
using System.Drawing;

//  Extracting Image and Text content from Pdf Documents

// open a 128 bit encrypted PDF
using PdfDocument PDF = PdfDocument.FromFile("encrypted.pdf", "password");

//Get all text to put in a search index
string AllText = PDF.ExtractAllText();

//Get all Images
IEnumerable<System.Drawing.Image> AllImages = PDF.ExtractAllImages();

//Or even find the precise text and images for each page in the document
for (var index = 0; index < PDF.PageCount; index++) {
    int PageNumber = index + 1;
    string Text = PDF.ExtractTextFromPage(index);
    IEnumerable<System.Drawing.Image> Images = PDF.ExtractImagesFromPage(index);
    ///...
}
'Rendering PDF documents to Images or Thumbnails
Imports IronPdf
Imports System.Drawing

'  Extracting Image and Text content from Pdf Documents

' open a 128 bit encrypted PDF
Private PdfDocument As using

'Get all text to put in a search index
Private AllText As String = PDF.ExtractAllText()

'Get all Images
Private AllImages As IEnumerable(Of System.Drawing.Image) = PDF.ExtractAllImages()

'Or even find the precise text and images for each page in the document
For index = 0 To PDF.PageCount - 1
	Dim PageNumber As Integer = index + 1
	Dim Text As String = PDF.ExtractTextFromPage(index)
	Dim Images As IEnumerable(Of System.Drawing.Image) = PDF.ExtractImagesFromPage(index)
	'''...
Next index
VB   C#

In the following code examples, we extract data from the PDF file using IronPDF. First of all, we load the input PDF document in the program. We use an encrypted PDF file, so we write the password to access the file. After that, we start extracting data. We extract text data using the ExtractAllText() function. This function extracts all text data and stores it in a string. We can output this string as a "txt" file. Extracting table data is required if you have some PDF invoices with tabular data and want to extract data from them to perform data analysis. We can also extract table data and store it in a CSV file. We can also create a new PDF document from extracted data.

The second part extracts the high-quality images from the PDF document using ExtractAllImages(). It extracts all images from the PDF document. We can also extract the data from specific pages and extract specific data from PDF documents.

Conclusion

IronPDF is the best library for PDF-related operations. We can extract data from PDF files with just one line. The IronPDF library is easy to use and offers a wide variety of functions for performing PDF operations.

IronPDF is completely free for development. You can use and test all functions in the development phase for free. While payment is needed for commercial use, you can access the 30-day free trial for production without any payment. Moreover, Iron Software currently has a special offer for you. You can buy a suite of five Iron Software packages for the price of just two. This is a one-time payment that will give you access to five excellent Iron Software solutions. Grab the offer from the following links.