How did you manage to suck it from the site and make PDF's? All I get from the site is a small cover as a .JPG. I have Winrar as well but cannot see just how you get at the document in order convert it to a pdf. I cannot even see a document.
How big is the file you have? If it's a few K, you just saved a thumbnail image that served as a hotlink.
If it's a few MB, it's the full doc. With a small jpg prefixed to the archive. The beauty of Winrar (and 7zip) is that if you run them and tell them to open any specified file as if it is an archive, they actually try to search through the file for an archive.
So a 'RARbook' is a small jpg, prefixed on a rar archive, in one file, with a .jpg filename suffix.
Result: the OS displays the small image (which serves as a 'book cover'), while Winrar can extract the archived file contents.
You could change the suffix to .rar, but then the file won't display as the cover image.
It's far from ideal, but it's BETTER than PDF, in which the contained file subcomponents can only be extracted with great and tedious effort. PDF is designed to be an impenetrable container.
See also
http://everist.org/archives/scans/RAR-books/_about_rar_books/You can fiddle-fart around with your .pngs scattered loose in a folder like old Polaroids in the bottom of a drawer. I'll keep using dynamic formats like .pdf and .rtf, thank you.
I wonder if you noticed that there is a .html file in that folder. Did you try opening it? It seems not.
Viola! The whole document as a single entity. Using a browser to scroll and zoom, which works very well indeed.
The folder of images is just another form of wrapper, exactly as PDF is, EXCEPT that you have the option of easily looking at the individual pages and images if you want.
Using html for structure also gives vast advantages over PDF, in flexibility, structural visibility and how the content is presented, indexed and formatted. I just usually only bother to make a simple linear document.
And all of this, is because I expect there to be a decent, sensible and functional container format someday, and it will be a lot easier to convert simple, totally visible-structure html+images docs over, than from the dog's vomit of a format that is PDF.
To quote someone else's recent comment: "PDF is where information goes to die."
Incidentally another reason I prefer to keep the image files visible, is that while creating them I control the process of choosing encoding type, to best suit the images and optimize compression within limits _I_ choose. Rather than some braindead auto-PDF construction algorithm.