I have seen many people linking postscript versions of their resume along with the pdf versions.
What purpose does it serve?
Postscript is a page description language and therefore a programming language. Postscript files can be rasterized by any Raster Image Processor, which are also to be found in some printers as well as specialized programs (e.g.
PDFs instead … I'll let Adobe talk here in their PS vs. PDF article:
That all being said, there are no technical advantages of Postscript over PDF. You can send a PS file directly to a printer, but that's about it.
This page shows how gzipped Postscript can be smaller than an equivalent PDF file, which might be an issue.
While @slhck's answer is true, so far as it goes, there's more to it. If you read the Camelot paper, you'll see that pdf represents a splitting of the Postscript technology. So there's more hacker cred to preferring Postscript. :)
Features PDF has that Postscript does not:
Features Postscript has that PDF does not:
As an example, my cv is far more clever as postscript than a pdf would be (logically, it must be at least twice as large, possibly three times).