@snibgo has made the front page of Hacker News (#22 when I saw it: Snibgo's ImageMagick Pages (2014) | Hacker News
His page is a real gem, just wanted to remind everyone about it.
https://im.snibgo.com/index.htm
Thank you for sharing your knowledge with us!
Thanks for the thanks.
I hate bash even more than I hate BAT. But I’ve been writing BAT scripts for over 30 years, so I know the language fairly well. I don’t know bash well. (I might add that I love ImageMagick, and I hate ImageMagick.)
An automatic BAT->bash translator would be trivial for trivial BAT scripts, but difficult and tedious for complex BAT scripts. Creating optimal bash would be more difficult. But if someone wants to try this, that’s fine by me.
My pages are more about exploring concepts than packaged solutions. The concepts are more important and interesting to me than the tools.
As mentioned in the link, Fred’s ImageMagick Scripts is a good collection of packaged bash scripts (with licensing conditions).
Hello @snibgo
DISCLAIMER: I am a G’MIC user, through GIMP 2.10.14, on Windows 10 (I7 cpu, 8 gb RAM, Nvidia GPU) 
What’s the difference in terms of speed about this two toolkits?
In other words, is Imagemagick “generally” faster than G’MIC as regards “similar” filters?
As regards G’MIC, with big images, quite often its filters are pretty slow.
As you probably know G’MIC does not take advantage of the GPU. However many of its filters are multi-threaded (they can take advantage of multi-core CPUs).
I haven’t done performance comparisons between ImageMagick and G’MIC.
Most IM operations use multi-threading. Some (such as “-blur”) can use a GPU, via OpenCL.