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Fast OCR Configuration
using IronOcr;
using System;

var ocrTesseract = new IronTesseract();

// Fast Dictionary
ocrTesseract.Language = OcrLanguage.EnglishFast;

// Turn off unneeded options
ocrTesseract.Configuration.ReadBarCodes = false;

// Assume text is laid out neatly in an orthogonal document
ocrTesseract.Configuration.PageSegmentationMode = TesseractPageSegmentationMode.Auto;

using var ocrInput = new OcrInput();
ocrInput.LoadImage(@"images\image.png");

var ocrResult = ocrTesseract.Read(ocrInput);
Console.WriteLine(ocrResult.Text);
Imports IronOcr
Imports System

Dim ocrTesseract = New IronTesseract()

' Fast Dictionary
ocrTesseract.Language = OcrLanguage.EnglishFast

' Turn off unneeded options
ocrTesseract.Configuration.ReadBarCodes = False

' Assume text is laid out neatly in an orthogonal document
ocrTesseract.Configuration.PageSegmentationMode = TesseractPageSegmentationMode.Auto

Using ocrInput = New OcrInput()
    ocrInput.LoadImage("images\image.png")

    Dim ocrResult = ocrTesseract.Read(ocrInput)
    Console.WriteLine(ocrResult.Text)
End Using
NuGet Download
PM > Install-Package IronOcr
Fast OCR Configuration

Fast OCR Configuration

This example can significantly reduce OCR processing time with only a small trade-off in accuracy.

You may also be interested in how to OCR a specific area within an image which can significantly improve speed as well.

You can download IronOCR from NuGet or as a DLL directly.

Explore IronTesseract for Enhanced OCR in .NET
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C# NuGet Library for PDF
Install with NuGet

Version: 2026.10

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: 2026.10

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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