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Polish OCR in C# and .NET

Curtis Chau
Curtis Chau
Updated: August 2, 2026
Other versions of this document:

IronOCR is a C# software component that allows .NET developers to read text from images and PDF documents in 126 languages, including Polish. It is an advanced fork of Tesseract, built exclusively for .NET developers, and regularly outperforms other Tesseract engines for both speed and accuracy.

Contents of IronOcr.Languages.Polish

This package contains 43 OCR languages for .NET:

  • Polish
  • PolishBest
  • PolishFast

Download

Polish Language Pack [język polski]:

Installation

The first thing to do is to install the Polish OCR package into your .NET project.

To install using NuGet Package Manager, execute the following command:

PM > Install-Package IronOcr.Languages.Polish

Code Example

This C# code example demonstrates how to read Polish text from an image or a PDF document using IronOCR.

// Install the IronOcr.Languages.Polish package via NuGet before using this code.
using IronOcr;

public class PolishOcrExample
{
    public void ReadPolishTextFromImage()
    {
        // Initialize the IronTesseract object
        var Ocr = new IronTesseract();
        
        // Set the language to Polish
        Ocr.Language = OcrLanguage.Polish;
        
        // Provide the path to the image or PDF file containing Polish text
        using (var Input = new OcrInput(@"images\Polish.png"))
        {
            // Perform OCR on the input image
            var Result = Ocr.Read(Input);
            
            // Extract all recognized text
            var AllText = Result.Text;
            
            // Display or process the recognized text
            Console.WriteLine(AllText);
        }
    }
}

This script initializes the OCR engine, specifies the language (Polish), and processes the image located at "images\Polish.png" to extract and display the text. Ensure that the file path is correct and that the OCR package is installed prior to running the code.

Curtis Chau
Technical Writer

Curtis Chau holds a Bachelor’s degree in Computer Science (Carleton University) and specializes in front-end development with expertise in Node.js, TypeScript, JavaScript, and React. Passionate about crafting intuitive and aesthetically pleasing user interfaces, Curtis enjoys working with modern frameworks and creating well-structured, visually appealing manuals.

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C# NuGet Library for PDF
Install with NuGet

Version: 2026.9

PM > Install-Package IronOcr
nuget.org/packages/IronOcr/
  1. In Solution Explorer, right-click References, Manage NuGet Packages
  2. Select Browse and search "IronOCR"
  3. Select the package and install
C# PDF DLL
Download DLL

Version: 2026.9

or download Windows Installer here.

  1. Download and unzip IronOCR to a location such as ~/Libs within your Solution directory
  2. In Visual Studio Solution Explorer, right click References. Select Browse, "IronOCR.dll"

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