OCR Tesseract Image DPI The OcrInput class will automatically resolve low-resolution images for IronTesseract. Although Tesseract generally requires a 300 DPI input, IronTesseract has been tuned to work with 99+% accuracy on 225 DPI scans. This can double OCR speed. Too high a DPI is slow. Too low a DPI causes inaccuracies. If in doubt, do nothing, and Iron Tesseract will preconfigure everything for you. How to Improve Low-Quality DPI in Tesseract Install the OCR library to improve low-quality DPI. Construct an IronTesseract instance. Create an OcrInput object with the path to the image. Choose a target DPI value. Invoke the Read method with the OcrInput object. Explore How to Use Input Images with IronOCR Related Docs Links View on Github Related Tutorial Related How-To Guide Class Documentation OCR Language Packs Download IronOCR DLL Report an Issue on this page Ready to Get Started? Nuget Downloads 5,058,051 | Version: 2025.11 just released Free NuGet Download Total downloads: 5,058,051 View Licenses
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