[eboyhan]

Targeted specifically at the DX? No, not to my knowledge. However, if you have control of the sources to be turned into a PDF, then there are things you can do. You could perhaps adjust font sizes before conversion. The most important thing I have found is to avoid page headers and footers which tend to be outdented in ways that use up valuable left/right space, If you must have headers/footers, try to get them centered on the page.

Most pdf-creating tools are little more than printer drivers with limited control over the creation process. The best of these that I have found is one that comes with the Nitro PDF reader. This reader is in many ways superior to Adobe's.

If you want to deal with store bought PDFs, then you are going to need a pdf editing package. The gold standard here is Adobe Acrobat which they sell for $300. Nitro also sells a pdf editor for considerably less. PDF is an incredibly complex format designed originally for prepress operations; so mastering the editing of store-bought PDFs is not for the faint of heart.

Calibre is a package which (among its many functions) offers many format conversion options including to/from pdf. Some have elected to convert pdf into mobi or other eBook formats. These conversions are not universally successful, and for store-bought PDFs can be really unpleasant.

For relatively simple docs, there is a lot that can be done to make the DX reading experience better. All of this takes time and effort (and more of it the more complex the document) -- for most this is probably not what they bargained for -- better if Amazon improves their reader.