@Alpe, I am sorry if I am slow to understand, I take my retirement to learn the use of the computer.
I have a mobi ( dictionarie )
I do not know to do mobi ==> stardict
If you know or find already on the internet a script
I know to do stardict ==> kobo ( I know not yet use penelope I do by hand )
to be able to mobi
==> stardict ==> kobo
My next step learn penelope, I will take the time it takes, I like to understand.