K2pdfopt

This is a pdf optimization tool that will re-size the fonts and optimize it for mobile devices. You don’t have to install the program, simply drag the .Pdf file to the program and select an option or press enter. This is a wonderful program and I highly recommend it. If you are having problems running the program you can view the guide HERE

Description from the developer:

K2pdfopt (Kindle 2 PDF Optimizer) is a stand-alone program which optimizes the format of PDF (or DJVU) files for viewing on small (e.g. 6-inch) mobile reader and smartphone screens such as the Kindle’s. It is meant for text-based files on a white background which may also have graphics or figures. It is fully automated and can batch-process PDF/DJVU files. K2pdfopt works by converting each page of the PDF/DJVU file to a bitmap and then scanning the bitmap for viewable areas (rectangular regions) and cutting and cropping these regions and assembling them into multiple smaller pages without excess margins so that the viewing region is maximized. Any kind of PDF/DJVU file (best if it has a primarily white background) can be converted. K2pdfopt works especially well on two-column or multi-column PDF/DJVU files such as IEEE and other technical journal articles (see examples below–it auto-detects two-column regions on the page), but even single-column files will often be significantly improved and much easier to read (see examples). K2pdfopt has the advantage over other PDF converters in that it fully preserves the rendered PDF fonts and graphics from the original file, unlike programs that convert the PDF to an e-book format. Also, because k2optpdf is completely independent of language or fonts, it will work equally well on documents in any language.