A royalty free OCR Engine for use with GdPicture Imaging SDK Toolkits. GdPicture Tesseract Plugin is a low cost, fast, accurate and royalty free OCR Engine for development of applications using GdPicture Imaging SDK Toollkits. Based on the Google's open source Tesseract OCR, GdPicture Tesseract Plugin brings OCR features to GdPicture Toolkits such as text recognition on specific area of an image and searchable PDF/A (PDF-OCR) creation from scanner, image or existing PDF documents.