That's one approach, but for something that amounts to a build step the ideal case is not to have to press a button. For one thing, in a case like this the sour

That's one approach, but for something that amounts to a build step the ideal case is not to have to press a button. For one thing, in a case like this the source images are probably in a repository and the converted images aren't, so you can wind up needing to open Inkscape and run the script to keep them in sync.