Image issues with Kobo Mini (converted kindle book to epub)

stoduk · 09-04-2013, 07:54 AM

Hi Folks,

I have just bought a Kobo Mini (just £29 at the moment!) and wanted to get a travel guide to take on a trip with me. The cheapest option for the ebook is amazon, which means converting the kindle file to an epub - I am giving this a trial run with the sample of the book, and I'm having some problems.

The issue is with larger images (maps most often) where I can just see the top left corner of the image.

Is there some setting I should be using to avoid this problem?

Manually editing the CSS to reduce the image size seems to work - but obviously that isn't practical to do for a whole book

I (naively?) assumed that selecting a matching "output profile" in the "page setup" tab during conversion would force scaling of images like this - have I misunderstood? [I had to select Kobo Reader as the nearest option, though it has a slightly lower resolution than Kobo Mini so that should be fine]

TIA,
Anthony

Calibre version: 0.9.24 and 1.1 (I updated to check if it was fixed)
Device: Kobo Mini
Book: http://www.amazon.co.uk/Madagascar-B...dagascar+bradt

The screen resolution of the mini appears to be 800x600, though some of the height seems to be lost to margins (not sure what resolution, appears to be 8mm at top and 9mm at bottom, of 101mm - so effective resolution of ~665x600).

stoduk · 09-05-2013, 06:42 AM

FWIW I've hacked this to "work" by changing the CSS file for all images - limiting the size to 700x600 (its a 800x600 screen, but has top + bottom margins, so 700 was about right), while maintaining aspect ratio.

However, this all seems like something Calibre should be doing - else why does it ask what device to output for?!? Anyone got any experience? Could it be some CSS (specifying a very tall/wide image) that the Kobo Mini is handling rather literally? Perhaps other devices would let you scroll to see the whole image, it doesn't seem possible on this..

kovidgoyal · 09-05-2013, 06:46 AM

The output profile resizes actual image files, it does not touch css. There is no way to automatically change size specifications in css.

09-04-2013, 07:54 AM	#1
stoduk Member Posts: 18 Karma: 10 Join Date: Sep 2013 Device: Kobo Mini, Kindle Paperwhite V2	Image issues with Kobo Mini (converted kindle book to epub) Hi Folks, I have just bought a Kobo Mini (just £29 at the moment!) and wanted to get a travel guide to take on a trip with me. The cheapest option for the ebook is amazon, which means converting the kindle file to an epub - I am giving this a trial run with the sample of the book, and I'm having some problems. The issue is with larger images (maps most often) where I can just see the top left corner of the image. Is there some setting I should be using to avoid this problem? Manually editing the CSS to reduce the image size seems to work - but obviously that isn't practical to do for a whole book I (naively?) assumed that selecting a matching "output profile" in the "page setup" tab during conversion would force scaling of images like this - have I misunderstood? [I had to select Kobo Reader as the nearest option, though it has a slightly lower resolution than Kobo Mini so that should be fine] TIA, Anthony Calibre version: 0.9.24 and 1.1 (I updated to check if it was fixed) Device: Kobo Mini Book: http://www.amazon.co.uk/Madagascar-B...dagascar+bradt The screen resolution of the mini appears to be 800x600, though some of the height seems to be lost to margins (not sure what resolution, appears to be 8mm at top and 9mm at bottom, of 101mm - so effective resolution of ~665x600).

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
Kobo Touch Mini SD issues	ImmortalBlue	Kobo Reader	7	12-26-2011 11:33 PM
RTF to Epub, Image issues	oldbwl	Conversion	11	11-13-2011 10:43 AM
image issues with Epub	ematte	Introduce Yourself	6	10-01-2010 01:52 PM
Doubts about Kobo - jpg converted to pdf, and some smaller issues...	mig_akira	Kobo Reader	9	06-10-2010 06:11 PM
Converted Epub Issues	Demented	Calibre	6	12-29-2009 07:18 PM

09-05-2013, 06:42 AM	#2
stoduk Member Posts: 18 Karma: 10 Join Date: Sep 2013 Device: Kobo Mini, Kindle Paperwhite V2	FWIW I've hacked this to "work" by changing the CSS file for all images - limiting the size to 700x600 (its a 800x600 screen, but has top + bottom margins, so 700 was about right), while maintaining aspect ratio. However, this all seems like something Calibre should be doing - else why does it ask what device to output for?!? Anyone got any experience? Could it be some CSS (specifying a very tall/wide image) that the Kobo Mini is handling rather literally? Perhaps other devices would let you scroll to see the whole image, it doesn't seem possible on this..

09-05-2013, 06:46 AM	#3
kovidgoyal creator of calibre Posts: 43,858 Karma: 22666666 Join Date: Oct 2006 Location: Mumbai, India Device: Various	The output profile resizes actual image files, it does not touch css. There is no way to automatically change size specifications in css.

Advert