Are cover.jpg and metadata.opf files included with Book.azw3 important?

I've a book in the .azw3 extension. There are two files included with it in the same folder which are cover.jpg and metadata.opf.

Should I keep these files?

Note: I use Kindle Previewer or Calibre for Microsoft Windows to open the .azw3 file.

1 Answer

Both the cover.jpg and metadata.opf files are generated by Calibre to preview the cover and metadata of the book. Calibre generates those files from embedded information in the .azw3 file.

So the two files are useless if you're giving the book to a friend or saving it in a separate folder from the one Calibre uses to read the book. However, be cautious not to delete the two files generated in the folder Calibre is using.