AZW3 to EPUB Conversion in Calibre Not Working

tkil44 · 04-21-2016, 02:12 PM

Trying to convert a .azw3 ebook to .epub format. Let Calibre run for over 24 hours and it still said "working". Do I continue to let it run or what? I've tried converting it to .pdf and .mobi with similar results. I'd be happy with a .pdf although .epub would be ideal. This is the only book that I've had a issue converting in Calibre. Please help!

Divingduck · 04-21-2016, 03:20 PM

Seems to be a big one. I have one book that took nearly 70 hours for conversion. Sure it is azw3 and not mobi?
Normally you don't need to convert azw3 to epub. Use the plugin KindleUnpack.

theducks · 04-21-2016, 03:51 PM

A normal AZW3 to EPUB happens pretty quick
Did you have Heuristics ON or some other setting that require rescaling the book (image size or Text size)?

tkil44 · 04-22-2016, 12:21 PM

It is definitely an AZW3 and its 15mb in size which I don't think is too big. I actually converted another AZW3 book and it worked fine, although not as big. I'll try the kindleunpack and see if that works. I want to view the book in iBooks.

JSWolf · 04-22-2016, 12:51 PM

Quote:

Originally Posted by tkil44

Trying to convert a .azw3 ebook to .epub format. Let Calibre run for over 24 hours and it still said "working". Do I continue to let it run or what? I've tried converting it to .pdf and .mobi with similar results. I'd be happy with a .pdf although .epub would be ideal. This is the only book that I've had a issue converting in Calibre. Please help!

There is a much much better way to do this. The way to do this is to install the KindleUnpack plugin and format shift from KF8 to ePub. Then load the ePub in the eBook Editor, validate it, fix any errors and you are good to go.

eschwartz · 04-22-2016, 01:15 PM

The time it takes to convert a book is not dependent on the filesize as much as it is the internal markup complexity. Books with very complex markup have been known to take 48 hours or so to convert.

All you can do is make sure the computer has lots of RAM, and wait.
Or use KindleUnpack which doesn't convert, it merely unpacks the book and adds an EPUB manifest which is a lot less work.

JSWolf · 04-22-2016, 05:30 PM

Quote:

Originally Posted by eschwartz

The time it takes to convert a book is not dependent on the filesize as much as it is the internal markup complexity. Books with very complex markup have been known to take 48 hours or so to convert.

All you can do is make sure the computer has lots of RAM, and wait.
Or use KindleUnpack which doesn't convert, it merely unpacks the book and adds an EPUB manifest which is a lot less work.

But after you use KindleUnpack, you have to validate as there will be errors that need to be fixed.

tkil44 · 04-22-2016, 07:08 PM

JSWolf, I converted it using KindleUnpack but how do I verify it? The formatting is messed up and I'm assuming the validation will fix this?!?

theducks · 04-22-2016, 07:42 PM

Quote:

Originally Posted by tkil44

JSWolf, I converted it using KindleUnpack but how do I verify it? The formatting is messed up and I'm assuming the validation will fix this?!?

Validation just enumerates the (HTML or CSS syntax) errors.
Calibre-editor has a very nice Validation for the HTML files and suggests possible fixes

Stylistic format errors indicate a possible bad CSS
Note: Calibre and Sigil Viewers both tolerate errors. Always do a final LOOK-SEE on the target device.

The CSS needs to be validated separately at W3C (or using the tools they provide)

tkil44 · 04-22-2016, 07:57 PM

I ran check book in Calibre and have a lot of CSS errors. I don't know what you mean by CSS needs to be validated separately at W3C. Sorry, I'm very new to this. I'm trying to read the book on an iPad.

tkil44 · 04-22-2016, 07:58 PM

Also, could you give me the steps on how to validate within Calibre?

theducks · 04-22-2016, 08:22 PM

Quote:

Originally Posted by tkil44

Also, could you give me the steps on how to validate within Calibre?

Checkbook is Calibres XHTML validate

I don't know how to validate the CSS from inside the editor

I use U(npack) and paste it into W3cs webpage validator ( I just usually use Sigil for that step. )

tkil44 · 04-22-2016, 08:34 PM

W3c website said the document cannot be checked. I've tried other online validation sites and I keep getting errors. CSS seems to be the common error. Is there someone I could send the book to and have them fix it for me?

theducks · 04-22-2016, 09:37 PM

Quote:

Originally Posted by tkil44

W3c website said the document cannot be checked. I've tried other online validation sites and I keep getting errors. CSS seems to be the common error. Is there someone I could send the book to and have them fix it for me?

What did you send to W3c?

You can only send a CSS, not the book.
And What way you send depends on the tool (paste, file)

If it is corrupt, go back to where you purchased it.
MR does not allow passing around copyrighted material

DO NOT post the book

tkil44 · 04-22-2016, 09:48 PM

I sent the book and used file. Where do I find the CCS? The document is not corrupt.

04-21-2016, 02:12 PM	#1
tkil44 Junior Member Posts: 7 Karma: 10 Join Date: Apr 2016 Device: iBooks	AZW3 to EPUB Conversion in Calibre Not Working Trying to convert a .azw3 ebook to .epub format. Let Calibre run for over 24 hours and it still said "working". Do I continue to let it run or what? I've tried converting it to .pdf and .mobi with similar results. I'd be happy with a .pdf although .epub would be ideal. This is the only book that I've had a issue converting in Calibre. Please help!

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04-21-2016, 03:20 PM	#2
Divingduck Wizard Posts: 1,166 Karma: 1410083 Join Date: Nov 2010 Location: Germany Device: Sony PRS-650	Seems to be a big one. I have one book that took nearly 70 hours for conversion. Sure it is azw3 and not mobi? Normally you don't need to convert azw3 to epub. Use the plugin KindleUnpack.

04-21-2016, 03:51 PM	#3
theducks Well trained by Cats Posts: 30,412 Karma: 58055868 Join Date: Aug 2009 Location: The Central Coast of California Device: Kobo Libra2,Kobo Aura2v1, K4NT(Fixed: New Bat.), Galaxy Tab A	A normal AZW3 to EPUB happens pretty quick Did you have Heuristics ON or some other setting that require rescaling the book (image size or Text size)?

04-22-2016, 12:21 PM	#4
tkil44 Junior Member Posts: 7 Karma: 10 Join Date: Apr 2016 Device: iBooks	It is definitely an AZW3 and its 15mb in size which I don't think is too big. I actually converted another AZW3 book and it worked fine, although not as big. I'll try the kindleunpack and see if that works. I want to view the book in iBooks.

04-22-2016, 01:15 PM	#6
eschwartz Ex-Helpdesk Junkie Posts: 19,421 Karma: 85397180 Join Date: Nov 2012 Location: The Beaten Path, USA, Roundworld, This Side of Infinity Device: Kindle Touch fw5.3.7 (Wifi only)	The time it takes to convert a book is not dependent on the filesize as much as it is the internal markup complexity. Books with very complex markup have been known to take 48 hours or so to convert. All you can do is make sure the computer has lots of RAM, and wait. Or use KindleUnpack which doesn't convert, it merely unpacks the book and adds an EPUB manifest which is a lot less work.

04-22-2016, 07:08 PM	#8
tkil44 Junior Member Posts: 7 Karma: 10 Join Date: Apr 2016 Device: iBooks	JSWolf, I converted it using KindleUnpack but how do I verify it? The formatting is messed up and I'm assuming the validation will fix this?!?

04-22-2016, 07:57 PM	#10
tkil44 Junior Member Posts: 7 Karma: 10 Join Date: Apr 2016 Device: iBooks	I ran check book in Calibre and have a lot of CSS errors. I don't know what you mean by CSS needs to be validated separately at W3C. Sorry, I'm very new to this. I'm trying to read the book on an iPad.

04-22-2016, 07:58 PM	#11
tkil44 Junior Member Posts: 7 Karma: 10 Join Date: Apr 2016 Device: iBooks	Also, could you give me the steps on how to validate within Calibre?

04-22-2016, 08:34 PM	#13
tkil44 Junior Member Posts: 7 Karma: 10 Join Date: Apr 2016 Device: iBooks	W3c website said the document cannot be checked. I've tried other online validation sites and I keep getting errors. CSS seems to be the common error. Is there someone I could send the book to and have them fix it for me?

04-22-2016, 09:48 PM	#15
tkil44 Junior Member Posts: 7 Karma: 10 Join Date: Apr 2016 Device: iBooks	I sent the book and used file. Where do I find the CCS? The document is not corrupt.

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