[davidfor]

Originally Posted by Regard_39

Hi,
My library has 2000 books. Only 180 are converted via Calibre to kepub.
My 3 children and I each use a Kobo and therefore the Calibre conversion to take advantage of kepub. My wife uses a Kindle.
Recently I struggled to convert a kepub. A Calibre error was preventing me from doing so. Kepubify did not have this problem and got me out of it.

As @compurandom said, if there is an error in the conversion report it and we will try to fix it.

I'm wondering if I should change my entire database and start with a library that has been fully converted to kepub using kepubify.
- the transfer would be much faster and without errors.
- the size would be divided by two?

A) Is there anything I haven't seen?

There is no real reason not to do it. A valid kepub is a valid epub. If you want to read it somewhere that only handles epubs, you just change the extension. The difference is extra spans which will have no effect on the formatting. Or if they do, you know that the epub reader you are using should not be used.

B) But I don't know if Calibre will be able to process the kepubs and send them to the kindle in mobi format.

So long as you have the Kepub input plugin installed, calibre can convert from kepub to any other format that it can convert epubs to.

C) I prefer to ask the following question: My current library is very rich with tags, series, collections and ratings. Is all this info kept after kepubify conversion?

If you run kepubify against the epub and put the kepub back in the library as another format for the book, you will not lose anything. You do need to have the Kepub Metadata Reader and Writer plugins installed. These are needed for calibre to update or read the metadata in kepubs.

Here is how I see the procedure:
- streamline my library by deleting the 180 existing kepubs
- launch the batch conversion with kepubify
- delete all epubs

No one seems to manage their library with only kepub. Something seems to escape me... maybe I didn't search enough on the forum

It isn't done because only Kobo ereaders support kepubs. And apart from Kindles, everything else will work with epubs. It makes things simpler if you are using multiple devices or apps to have the epub. And while kepubs are really just epubs with some extra spans, some people think that means they are not real books. About the only thing you can't do with an kepub in calibre is edit it. The calibre editor only allows epubs or AZW3. But, working around that is not very hard.

Personally, I don't think it is worth it. If there are multiple Kobo's being connected to the library, then converting in a batch and storing the kepub will work. And be quicker when you send it to the device. I don't think the space saved is worth worrying about.