I really should be doing something else, but this is too interesting.

It doesn't yet, but it could. Keep it mind, at the worst case scenario I get to pick which of the four individual minifiers I run. I will always at least be able to match the best one.

There is absolutely nothing that prevents me from running zopfli over the final outputs and comparing the sizes. I can use the compressed size to drive search. A matter of a change in metric used to consider what is an improvement.

I'll add this to my todo list on this project. Looks like I may be doing more on this than I originally intended...