12-31-2022, 11:20 AM | #91 |
the rook, bossing Never.
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It would be silly to have to put a QR code to a web site, but 4" to 6" eink users might like that to view a large colour image on their 8" to 12" tablet.
I've tested QR codes in ebooks on DXG, Kindle Keyboard 3 (mobi) and PW3 (azw3) as well as Kobos with my small phone and 10" tablet. Also works on paper version which is only going to have mono. |
12-31-2022, 12:11 PM | #92 |
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You could buy eBooks from eBook.com. They use PayPal. I've traveled there and used PayPal. Worked no problem. I've also traveled with Kobo and bought eBooks. That I did via credit card.
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12-31-2022, 12:43 PM | #93 | |
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12-31-2022, 12:45 PM | #94 | |
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I’ll ask my contact if I can share anything, but with the holiday it could be a while. Last edited by Peter Ahlstrom; 12-31-2022 at 12:48 PM. |
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12-31-2022, 12:48 PM | #95 | |
the rook, bossing Never.
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I see that Kobo bookshop can find the edition for my region with one click. Amazon and ebooks might have it but you need to search more. Amazon UK is particularly broken search now. |
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12-31-2022, 12:53 PM | #96 | |
the rook, bossing Never.
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Some readers of SF or F or Detective do like the maps. |
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12-31-2022, 02:02 PM | #97 | |
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If s/he even knows. No aspersions on your pal, at all, but we all know far too well that up there, it's left-hand/right-hand around this stuff. I can not tell you how many times I would get completely contradictory and flatly wrong information out of ECR or one of the tech groups. I mean, even when you send files back, etc. PROVING that what they are telling you is a load of Dirty Old Socks, you get the same crap back. It's frustrating as hell. Yes, I know, proprietary, their stuff... but DAMN, would it be too much for them to at least try to give out some proper info? To me, it looks like they clearly have triggers in there, sort of media-queries that aren't, and they're displaying the high-rez on the "right" devices, but...if we don't know what drives that, we're all just flailing around and possibly overstuffing the goose. Hitch |
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12-31-2022, 02:06 PM | #98 | |
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A couple of my ebooks that I previously bought from amazon with maps of disappointing resolution are low priced as EPUB at the moment, so I bought them to check their illustrations. They are the Simon & Schuster Maude translation of War and Peace and Marcus Agrippa by Lindsay Powell. The former is 99 cents, its regular price, but sometimes it is a freebie. The latter is $2.99 at amazon and kobo but is $19.99 at ebooks.com Any way, all the images in both EPUBs are JPEG. Except for some probably dual page images, none are more than slightly larger than an Oasis 2 or 3 screen (a bit longer in the long dimension and a bit shorter in the short dimension). Images from the azw3 that are on the order of 1100x1800 or larger in the EPUBS are shrunk to 55% to 75% in dimension and JPEG compression cranked up enough to cause significant artifacts in and near text, sometimes degrading readability as much or more than dimensional resolution loss. Color photographs on the order of 600x1100 or smaller retain their resolution but are very heavily compressed compared to the color photographs from the EPUBS. I'm not set up to look into whether KFX versions downloaded directly to an Oasis over cellular/wifi escape dimension shinking without spending a lot of time and effort. But it looks to me like GIF is not the trigger for dimension shrinking. |
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12-31-2022, 02:11 PM | #99 |
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For azw3 color images they crank up compression, targeting 85KB or so.
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12-31-2022, 02:34 PM | #100 |
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I think it is great when authors/publishers put clean hi-res maps and other illustrations on the web and also agree that doesn't relieve amazon of responsibility to not degrade images so much they look bad or are unreadable on their e-ink devices. 7 inch kindles have been out for over 5 years. The images must be really awful on Scribes if they don't get better resolutiom and fewer artifacts.
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12-31-2022, 04:05 PM | #101 |
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I agree. That was a hypothesis based on the first book I looked closely at. Based on further evidence the problem of overly compressed images in KFX on Kindles appears to be unrelated to the image format used by the publisher.
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12-31-2022, 05:05 PM | #102 | |
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I hope a Scribe owner checks whether Scribes are given higher resolution and lets us know the results. I've personally decided to switch to buying the EPUB version of illustrated books and converting to KF8. The WordDumb plugin makes better Xrays than amazon anyway, so I no longer see any compelling (to me) reason to buy ebooks from amazon. |
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12-31-2022, 06:50 PM | #103 |
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So. I've just spent a few days optimizing a new book for putting it on KDP. Got it down to a 7.5 MB epub.
I ran it through Kindle Previewer and saved the kpf file. Then I used jhowell's Calibre plugin KFX Import to extract the resources on the command line. And (without the embedded epub file) it's 32.4 MB. Is that an at all accurate predictor of what file size will be delivered to customers? All of my carefully optimized gif files were changed to jpegs. The dimensions did not change, but the size ballooned. My biggest gif (the title page), 281 KB, became a 1.6 MB jpeg. My biggest chapter icon, 100 KB, turned into 875 KB. My smallest one, 10 KB, turned into 67 KB. And there are 64 chapters. After doing this, I tried it again with the regular ePub file that has pngs instead of gifs. The result was the same—all the pngs changed to huge jpegs. I really hope this is not indicative of what the delivery size will be. |
12-31-2022, 07:42 PM | #104 |
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Everyone involved with digital images really really really needs to understand what a disaster in image quality and size happens when a JPEG is used when a PNG or GIF is more appropriate or a PNG or GIF is used when JPEG is more appropriate.
I hope you are able to convey that to your contact at amazon. |
01-01-2023, 11:04 AM | #105 | ||
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The quality of images also depends on the type of book being published. Amazon does a better job of handling images in comics and manga than they do for reflowable format books. When you produce a KPF file using the Kindle Previewer the images in the book are handled by a program called KindleImageProcessor. When a book is actually published Amazon uses a different program, YJImageVariantGenerator, to produce the images that will be delivered to customers. What these programs do is undocumented and has changed over time. I suspect that what you get from unpacking a KPF will be similar to the KFX variant that customers using the Kindle for iOS and Android app will receive. I know of no way to see the true images that will be delivered to customers without actually publishing. Quote:
As far as I can tell the largest file size across all of the variants produced is shown as the file size on Amazon's product page for the book. Someone who has published may be able to comment on whether the file size on the product page is the same size used to calculate delivery costs. |
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