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Originally Posted by Peter Ahlstrom
Thanks for the report. That’s pretty frustrating to hear. I work for Brandon, and I make all the ebook images to deliver to Tor, as well as review their ePub file before it gets published. I max out the image sizes per Apple’s 4-million-pixel limit, and I optimize them as best I can.
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It sounds like you are doing it right. Amazon is messing with your hard work.
Quote:
Originally Posted by Peter Ahlstrom
The Lost Metal uses the same image quality as all of Brandon’s books since Words of Radiance. Do you also see poor quality images in e.g. Rhythm of War on that device?
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I had a look at Rhythm of War both on my Kindle Oasis and also using the Kindle for PC app. Near the beginning there is a map followed by two full page images. All of those are have noticeable degradation of image quality on the Oasis compared with Kindle for PC app. In the two full page images there are handwritten notes that are clear on the PC but nearly unreadable on the Oasis.
I extracted and compared the first of the two full page images. The one delivered to the PC app is 966KB in JPEG format with 1288x1920 pixels. The same image on the Oasis is 76KB in JPEG-XR format with 569x848 pixels.
I have looked at some other books and as far as I can tell Amazon is reducing the size of images delivered to e-ink Kindle devices in books with Enhanced Typesetting (KFX format) to be 82KB or less in size. I have come across a few exceptions where images were of higher quality, but so far I have been unable to determine why that is the case.