
: Re: How to rename epubs when the file name is a numeric string? I have a number of EPUB titles that need renaming, from the likes of "1631214659.epub" to "Moon's Napa and Sonoma" and so on. They
This is a long time after the question - but it doesn't seem to have a simple answer yet so:
The OP said his books"load into Calibre under their actual titles" which means the metadata in the files is OK. The simplest way "to rename the source file appropriately for archiving" is to use Calibre's "Save to Disk" function.
In Calibre go to Preferences/Saving to Disk and create the naming pattern you want.
e.g. something like {title} - {authors}. You can also set a preferred output format to automatically change mobi to epub or whatever.
Then you can import your numbered books to Calibre and use the Save to Disk feature to output your correctly named archive copy.
NB by this time you will have 3 Copies of each ebook: your original, Calibre's copy in it's library and the new renamed output version. If all you want is a copy easily identifiable by the file name then perhaps a regular backup of the Calibre library folder is all you need.
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