Dot Matrix OCR Troubleshooting with IronOCR

ByChaknith Bin

January 19, 2022

Updated June 22, 2025

Can I read dot matrix printouts/scans in IronOCR?

Yes - accuracy does depend on the quality of the input image. Some pre-processing of the image can also help improve results, so we suggest this article which offers suggestions - Improve Dot Matrix OCR Performance Tutorial

For deeper processing to achieve reliable OCR results, we recommend ImageMagick for .NET as a free and very well-documented tool with filters comparable to Photoshop - Magick.NET-Q8-AnyCPU on NuGet

You may also try loading a dot matrix-specific language pack. We don't have this available but a great place to start is this project on GitHub - ameera3's OCR Expiration Date Project

For more information on adding a custom language pack in IronOCR - Custom Language Example in IronOCR

Chaknith Bin

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Software Engineer

Chaknith works on IronXL and IronBarcode. He has deep expertise in C# and .NET, helping improve the software and support customers. His insights from user interactions contribute to better products, documentation, and overall experience.