I’m sorry to inform you that currently Aspose.Pdf.Kit doesn’t allow to detect blank pages. However, I have logged a new feature request as PDFKITNET-24267 in our issue tracking system. Our team will look into this requirement and you’ll be updated via this forum thread once it is supported.
As far as OCR functionality is available, our team is working on it and the preview version of this feature will be available at the end of Q1’2011 or early Q2’2011. We’ll announce it via our blogs.
If you have any further questions, please do let us know.