06 September 2012
The service is able to process 'general' fonts for sure regardless to source image format.
Outline fonts in general are not recognized without 'user pattern training' process which is not presented in the service.
PDF format itself can contain images or commands to form a face (image). Later case suppose textual information is in PDF file and can be extracted without applying OCR. To some extent this feature is supported in offline OCR SDK, but is not available in the service.