The following features and capabilities are available for OCR: Full Unicode support Multithread support Character recognition confidence Retrieving a character’s location Retrieving font information (e.g. style, family) Retrieving paragraph information (e.g. justification, alignment, bounding box) Direct conversion from an image or image-based PDF to PDF Extracting OCR results as text Getting the OCR result based on internal GdPicture structures serialized as a JSON string Recognizing only digits, only alpha, or results based on allowed or disallowed characters OCR context support (defines if the engine is processing a document, a single word, a single character, a text block, vertical text, etc.) Orientation detection