DJVU to EPUB conversion

Ivor3648 · 03-16-2011, 04:06 PM

Are there any plans for a DJVU to EPUB converter within Calibre? I would like to read DJVU files on my PRS 505.

Thanks

Ivor

kovidgoyal · 03-16-2011, 04:28 PM

No, there aren't

poco06 · 11-11-2011, 07:18 AM

Hello,
What could be the best way to convert a DJVU file in EPUB?
Is tere some specific software that can manage this?

Many thanks
Best regards

ldolse · 11-11-2011, 08:28 AM

Djvu is an image based format, there is no way to convert it to ePub automatically. If you're desperate and willing to put some serious effort into it you could probably convert djvu to jpg/tiff files (google for utils), and then pass those files over to OCR software like ABBYY finereader. Calibre can then convert the html created by the OCR software to ePub.

dwig · 11-11-2011, 11:37 AM

Quote:

Originally Posted by ldolse

...If you're desperate and willing to put some serious effort into it you could probably convert djvu to jpg/tiff files...

If at all possible, avoid converting to JPEG files. The JPEG compression artifacts will only make the OCR more problematic. Use only TIFF, GIF, BMP or other format that doesn't use a lossy compression method.

ab7vf · 11-11-2011, 02:47 PM

Maybe djview4 for djvu>pdf ... ??? for pdf>epub

Jim

Starson17 · 11-11-2011, 04:22 PM

I read djvu files on my Android phone with EBookDroid. Most are multi-column textbooks, with text boxes, sample code, equations, inserted photos, footnotes and the like that would convert very poorly even if I had them in PDF. It certainly depends on your source book, but from my experience, PDF conversion sucks for most source material, and djvu tends to be the suckiest type of source material there is.

Going djvu to image-PDF to OCR-PDF to ebook might work in theory, but I'd buy a djvu compatible ereader (any Android device) or stop at the image-PDF and read in PDF if I wanted this to work in practice.

03-16-2011, 04:06 PM	#1
Ivor3648 Junior Member Posts: 4 Karma: 10 Join Date: Feb 2011 Device: Sony PRS 505	DJVU to EPUB conversion Are there any plans for a DJVU to EPUB converter within Calibre? I would like to read DJVU files on my PRS 505. Thanks Ivor

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03-16-2011, 04:28 PM	#2
kovidgoyal creator of calibre Posts: 43,856 Karma: 22666666 Join Date: Oct 2006 Location: Mumbai, India Device: Various	No, there aren't

11-11-2011, 07:18 AM	#3
poco06 Member Posts: 19 Karma: 18214 Join Date: Jan 2010 Device: PRS600	Hello, What could be the best way to convert a DJVU file in EPUB? Is tere some specific software that can manage this? Many thanks Best regards

11-11-2011, 08:28 AM	#4
ldolse Wizard Posts: 1,337 Karma: 123455 Join Date: Apr 2009 Location: Malaysia Device: PRS-650, iPhone	Djvu is an image based format, there is no way to convert it to ePub automatically. If you're desperate and willing to put some serious effort into it you could probably convert djvu to jpg/tiff files (google for utils), and then pass those files over to OCR software like ABBYY finereader. Calibre can then convert the html created by the OCR software to ePub.

11-11-2011, 02:47 PM	#6
ab7vf Enthusiast Posts: 41 Karma: 296 Join Date: Sep 2009 Location: Pacific Northwest Device: dxg and newfound Icarus 8	Maybe djview4 for djvu>pdf ... ??? for pdf>epub Jim

11-11-2011, 04:22 PM	#7
Starson17 Wizard Posts: 4,004 Karma: 177841 Join Date: Dec 2009 Device: WinMo: IPAQ; Android: HTC HD2, Archos 7o; Java:Gravity T	I read djvu files on my Android phone with EBookDroid. Most are multi-column textbooks, with text boxes, sample code, equations, inserted photos, footnotes and the like that would convert very poorly even if I had them in PDF. It certainly depends on your source book, but from my experience, PDF conversion sucks for most source material, and djvu tends to be the suckiest type of source material there is. Going djvu to image-PDF to OCR-PDF to ebook might work in theory, but I'd buy a djvu compatible ereader (any Android device) or stop at the image-PDF and read in PDF if I wanted this to work in practice.

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