Most research papers have the same layout: two columns per A4 page. They mostly come as PDF or PS.

Although this is standard, it is not really accessible for people with people with bad vision, who prefer larger fonts. When you print this, the fonts are rather small. For those people, a reflowable PDF would make much more sense, so they can choose how big the fonts are on screen & paper.

Also, some of the new epaper devices, such as the Sony Reader or IRex, don't really support the format of these research papers (they become unreadable).

Do any of you have ideas how to convert a two column per page PDF/PS to a single larger column per page, and maybe even reflowable PDF?

Thanks,
Peter