Converting PostScript with ImageMagick

I've had a dig through the tortuous source code of ImageMagick and it seems to take all appropriate precautions when handling PostScript and PDF. I suppose I'll trust it to make thumbnails of these formats. It's very confusing for someone not intimately familiar with the internals, so I wouldn't like to bet that there aren't any race conditions, but surely some security-minded people have picked over it already.

I still need custom code to convert to plain text, because the batch files GhostScript provides don't check filenames with Web server grade paranoia. That code is finished and working already, though. Next stop, HTML; then another attempt to convert Word.

Update: I spoke too soon. There's some problem with creating temporary files when you're using the API and not the command line. Working on it.

Update of the update: A different API call works. PostScript and PDFs can now both be previewed by EPrints on Windows.