I've already learn how to batch compress my files as-is with 7zip but I have something more complex need on this issue. Maybe I can explain my needs with this scenario;
I have a backup folder of my drawings and model files and they are in their client's subfolders, so its folders-tree something like this:
Folder01\file1.abc, file2.abc, file3.def, file4.def
...and so on.
Is there a way to compress each *.abc file beside of original file and in its original place or similar solution for this kind a situation?