Recently, Optical Character Recognition is usually being employed in most of the easy approach. OCR techniques facilitate you to convert pictures, PDF files and numerous different kinds of documents into editable and \searchable information. Acceptable character recognition from all variations of pictures could be an up to date drawback. Various tools, algorithms and implement-tations are obtainable to discover characters from pictures. This survey paper presents a quick summary on favoured OCR techniques like matrix matching, feature extraction; neural network primarily based OCR and discusses OCR software system Tesseract.