The C# OCR Library

Images to Text with OCR See All 24 Code Examples

using IronOcr;

var ocr = new IronTesseract();

using (var input = new OcrInput())
{
    input.AddImage("attachment.png");
    input.AddPdf("report.pdf");

    OcrResult result = ocr.Read(input);
    string text = result.Text;
}

Install-Package IronOcr

Explore the code, install IronOCR with NuGet

Cross Platform Support

Designed for C#, F#, & VB.NET running on .NET 7, 6, 5, Core, Standard, or Framework

IronOCR Release Version 2023.3

Features & Upgrades

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The C# OCR Library

A C# OCR Library that prioritizes accuracy, ease of use, and speed. Licenses from $749.

IronOCR is the leading C# OCR library for reading text from images and PDFs. Its user friendly API allows developers to have OCR up and running in their .NET projects in minutes.

Tesseract 5 OCR in the language you need. We support 125+.

IronOCR Release Version 2023.3

Features & Upgrades

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Compatibility

.NET Languages:

C#
VB.NET
F#

Platforms:

.NET 7, 6 & 5
.NET Core 3x & 2x
.NET Standard 2
.NET Framework 4.6.2+

App Types:

Console, Web, & Desktop

OS:

Microsoft Windows
macOS
Linux (Debian, CentOS, Ubuntu)
Docker (Windows, Linux, Azure)
Azure (VPS, Webapps, Websites, Functions)
AWS (EC2, Lambda)

IDEs:

Microsoft Visual Studio
Jetbrains ReSharper & Rider

OCR Engine

Underlying OCR Engine:

Tesseract 5 (Custom for .NET)

International Languages:

125 Languages
High, Medium, and Fast Quality
Custom fonts & Languages

Text and Barcode Reading:

Text and Numbers
Multiple Languages at once
Barcodes (Over 20 Formats)

Specialist Documents:

Receipts
Checks (Cheques)
Invoices

Concurrency:

Single and Multithreading
Async Support
Suspend current thread
Cancel OCR Reading

Computer Vision:

Advanced Computer Vision finds text with our trained models

OCR Input

Read from Many Formats:

Images (jpg, png, gif, tiff, bmp)
Multi Page / Frame TIFFs & GIFs
System.Drawing Objects
Streams
PDFs (optimized target DPI)

Image Correction Filters:

Sharpen
EnhanceResolution
Denoise
DeepCleanBackgroundNoise
Dilate and Erode

Fix Image Orientation:

Crop Rectangles
Rotate
Deskew
Scale

Fix Image Colors:

Binarize
Grayscale
Invert Colors
Replace Colors

Apply a Crop Region:

Use a CropRectangle to improve reading

OCR Result

Simple Data Output:

.NET Text Strings
Barcode and QR Data
Images

Structured Data Output:

Pages
Blocks
Paragraphs
Lines
Words
Characters

Export Documents:

Searchable PDFs
hOCR Export
HTML Export
Page or Text Element as image
Barcode or QR Code as Image

Highlight Text and Save:

Highlight characters, words, lines, or paragraphs and save

Status and Analytics:

OCR Progress Tracking
Result Confidence

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World-Class Engineering,
24-Hour Support

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