I do not have a solution to the topic under discussion but have another question for you since you seem to possess sound knowledge on the intricate structure of the PDF file. Anyways, the moment I saw this question, call it reflex, I googled the same, found a bunch of search results, websites that claim to convert PDF files to any desired format (including HTML). But websites claim that they can convert 'online PDFs" to HTML. Now is there a difference between the regular PDF file and these 'online PDFs'? Pardon me if my question is extremely silly but I really wanted to know this because there are a number of sites that I bumped into that claim can do the coversion under this discussion. Thanks.