It is tax season in the US. My CPA wants all of my supporting documentation to be saved as PDF, but I saved all as one multi-page TIFF when I scanned them. Fortunately, I have access to LEADTOOLS OCR.
In terms of functionality and platform support, LEADTOOLS OCR is the most flexible OCR engine available. It makes converting more than 200 image types to PDF and other document formats an easy task. The resulting PDF can be an image-based or text-searchable PDF. It can even be a combination of image over text so the resulting PDF has the text, but looks exactly like the TIFF.