IronOCR - The OCR & Tesseract Library for .NET

IronOCR is an advanced OCR (Optical Character Recognition) library for C# and .NET.

IronOCR extracts text, barcodes, and QR codes from all major image and PDF formats using the latest Tesseract 5 engine. It enables OCR functionality in desktop, console, and web applications within minutes.

Unique Features of IronOCR:

  • Pure .Net OCR API
  • Runs entirely locally(no SaaS required)
  • Supports 125 languages
  • Reads barcodes and QR codes
  • Corrects low-quality, noisy, and distorted scans
  • Performance-optimized beyond any known Tesseract OCR build
  • Reads PDFs and multi-page TIFFs
  • Exports OCR scans as searchable PDFs or XHTML

Outputs data as plain text, barcode data, or an OCR result class (including paragraphs, lines, words, and characters).

Language Support

Supports 125 languages, including: Arabic, Chinese, English, Finnish, French, German, Hebrew, Italian, Japanese, Korean, Portuguese, Russian, Spanish, and more.

Custom language packs can also be created.

Compatibility

  • .NET 9, .NET 8, .NET 7, .NET 6, .NET 5, and .NET Core, Standard, and Framework 4.6.2+
  • Windows, macOS, Linux, Android, iOS, Docker, Azure, and AWS
  • Console, Desktop, and Web Apps. MVC, Blazor, MAUI, Razor Pages, Web Forms

Get Started

Quickstart: https://ironsoftware.com/csharp/ocr/
Install With NuGet: https://www.nuget.org/packages/IronOcr/

C# Code Example

using IronOcr;

// Instantiate Tesseract Engine
var ocrTesseract = new IronTesseract();
ocrTesseract.Language = OcrLanguage.English;

// Import image
using var ocrInput = new OcrInput();
ocrInput.LoadImage("image.png");
// Input.Deskew();  // use if image not straight
// Input.DeNoise(); // use if image contains digital noise

// Perform OCR
var ocrResult = ocrTesseract.Read(ocrInput);
Console.WriteLine(ocrResult.Text);

Further Documentation