Is there a quick and efficient online tool that would allow me to convert PDF files into fully OCRed text?
When trying out different OCR tools, you will notice a dramatic difference between free tools and professional ones. Therefore, if you want the quality of your results to be high, browse the internet for professional OCR software like Maestro Recognition Server from CVISION. If you think that Maestro might be what you need, or even if you are uncertain and just want to test it out, you can download the trial version and use it entirely for free.
For more about Maestro, and to download the free trial version, click below: