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Old 12-01-2025, 03:31 PM   #1
meghane_e
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Automatically convert to multiple formats?

I have Calibre set up to automatically convert files to EPUB, but I would like all of my incoming books to automatically try converting to two different formats, ie EPUB and AZW3. I'm ok, if the conversion fails. I would just like to make sure the attempt is made.

[Edit: I do know how to do a broad manual search ie `format:EPUB and not format:AZW3`. Would just like to automate it a bit.]

Is there anything currently in place that does that (as of Nov2025)?

Thank you!

Last edited by meghane_e; 12-01-2025 at 03:36 PM.
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Old 12-01-2025, 04:29 PM   #2
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No and IIRC it was asked before.
But WHY?
If you configure the device driver format order for each. Calibre will convert on the fly, not even putting the copy in the Library. Your Library has the 'master' only.
The only time this might be a pain is if you are sending a really complex book that takes a bunch of time to crunch.
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Old Yesterday, 04:32 PM   #3
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Quote:
Originally Posted by theducks View Post
No and IIRC it was asked before.
But WHY?
If you configure the device driver format order for each. Calibre will convert on the fly, not even putting the copy in the Library. Your Library has the 'master' only.
The only time this might be a pain is if you are sending a really complex book that takes a bunch of time to crunch.
Sorry, I don't understand what you're explaining here.

Basically, I want all my books' primary format to be in ePub (except for PDF and comics obviously) and I side-load everything onto my Kindle, so basically all of my ePubs also need to be converted to AZW3. I want to have as little direct interaction with the Zon as possible and I do not want to send things through amazon.com/sendtokindle. Occasionally I have a small batch of AZW3 books to convert to EPUB. Because I don't do that as much I tend to forget to check them, which is why I would like it to be automated.

Does that make sense?
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Old Yesterday, 05:07 PM   #4
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Calibre will do that ON THE FLY. EPUB->AZW3 is almost instant, so no need to pre-convert unless you want to edit the AZW3 BEFORE sending.

Just set the device driver with the formats in order. See image
Note Kindles do NOT have EPUB ticked. so it will auto convert to AZW3 (first on list).
Try it. It does work
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Old Today, 01:40 AM   #5
meghane_e
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Where is that window located (the image you posted)?
(Sorry for being slow here)

I did set the Preferences > Behavior
> Preferred Output Format: AZW3
> Preferred input format order: EPUB, AZW3
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