[marcl]

I want to export a certain amount of ebooks which have different filetypes basically epub and pdf.

I have epubs that exist aside in azw3 or other formats. This ebooks should be exported as epub. I can do this by select all ebooks in Calibre and choose export in a special format as epub.

But I have also some pdf files which should be exportet as pdf. How can I select these pdf ebooks in Calibre to choose export as pdf format?

Or can I select also all ebooks and just choose in the filetype dialog pdf and only the pdf will exportet without conversion of the epubs?