Thanks for the heads-up regarding convert.exe. I don't work with images that often but have used convert (i.e. the *nix version) from time to time for ad hoc format conversions and occasional resizing. It would be handy, even if only used infrequently, to have that functionality available on a Windows platform also.

It looks like I'll probably go with Image::LibRSVG, but thanks anyway for the ImageMagick links.