On Page SEO/PDF Content Questions (Best implementation?)

I am doing some work for an eCommerce website, that sells technical manuals for machinery. The actual website itself does not have very much content (which is something we hope to fix).

We have about 10,000 or so PDF's of manuals that we would like to have on the website, to add valuable content, but I am not sure I have the best way worked out to do this, and to turn these visits into conversions.

I have figured out presentation wise, that an iframe on the product page is the best way to implement this, but run into some issues;

1. Google DOES crawl PDF's, AND iframes, however, once crawled, and indexed, Google does not take the customer to the product page, it takes them to the PDF, with no way of getting to the actual website/store.
2. I do not believe that google will consider content in iframes actual content for the page, it will be considered content located under the actual domain (which is still very beneficial to us, correct me if I am wrong)


Here is the process I have worked out (it is sort of complex);

1. Pick 3-10 content filled pages from the PDF, and make them text recognizable.

2. Watermark, reduce the file size, and put a link to the coinciding product over the entire manual, so if they click anywhere they are taken to the product.

3. Make two copies of said PDF (this is where it may start to get a bit confusing). Because Google will take the customer to the .PDF file from the search engine, one of the PDF copies will have a javascript that is executed as soon as the customer clicks on the PDF preview in google, which will take them to the product page. The other copy will be in an iFrame on the product page (if it was the same copy, with the javascript, the page would keep refreshing).


The copy of the PDF without the javascript would be in a NO FOLLOW folder, so they do not get crawled. A huge reason they will be on the actual product page is to instill confidence in the customer, as it will be an actual preview of the manual they will be purchasing.

The copy of the Javascripted PDF will be in either a folder that is crawled, or all of the links will be in a handmade sitemap, or will have a do follow in the robot.txt file.

I have played around with converting the actual PDF's to HTML to display this information on the product page, instead of playing with the duplicate PDFS and javascript, but the conversion process is too unpredictable, and often we end up with totally unusable results.


What, in your opinion would be the best way to implement these text/content rich PDFs into the website, to provide the best SEO results? What faults do you see with the process I have created? Will google see the javascripted link, and ding us? Would this happen if I had it open the page in a new window?

Any thoughts, ideas, complaints, feedback, etc would be very appreciated, as this is an odd scenario that there does not seem to be a lot of information out there about.