Thanks, Gilles, for working with the ImageMagick folks to support PGF. I've been following the issue with interest.
My general deployment for web apps is via heroku. My concern is that if the conversion is via calling an external command line program, I won't be able to install it via heroku, at least not without paying $25/month for a dedicated dyno.
If it is possible to call that, I can hack something in now that calls it, probably writing the PGF data to a file, then calling the CLI to do the conversion and reading it back in. But I don't know if that's even possible via heroku and other cloud services. So ideally it'd be compiled in.
I surprised the API is C only, not C++. Unfortunate.
Again, thanks for working on it!
Tac