Composing jpeg image with multiple png files in Erlang/Elixir

I need to overlap a series of png images in order to create a single jpeg file in Erlang/Elixir. I can't find anywhere a way to do this task on the BEAM, so I would love to use Erlang NIFs and writing down some C code using the ImageMagick APIs, but again I can't find any documentation for this task.

Is there a way to do this in Erlang/Elixir/C?

You have three options:

• Use ImageMagick CLI - easy, slowest, safe (separate process)
• Write port wrapper using library bindings in your prefered language (C, Perl, LUA, Python, ...) - harder, fast, safe (separate process)
• Use NIFs - even harder, fastest (if done right!), unsafe (compromise BEAM reliability)

Choose according to your skill and requirements! If you are unable even found NIF official documentation and MagickWand API documentation I have some doubts the last one is the best choice for you.