[GH-ISSUE #1174] epub version not going to Kindle #1718

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opened 2026-04-11 08:04:49 -05:00 by GiteaMirror · 1 comment
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Originally created by @panth on GitHub (Feb 17, 2026).
Original GitHub issue: https://github.com/harvard-edge/cs249r_book/issues/1174

Is the epub version not meant to be uploaded to Kindle for reading ? I am trying the Send to Kindle option but its failing.

Originally created by @panth on GitHub (Feb 17, 2026). Original GitHub issue: https://github.com/harvard-edge/cs249r_book/issues/1174 Is the epub version not meant to be uploaded to Kindle for reading ? I am trying the Send to Kindle option but its failing.
GiteaMirror added the area: booktype: question labels 2026-04-11 08:04:49 -05:00
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@profvjreddi commented on GitHub (Feb 17, 2026):

Hi @panth,

Thank you for bringing this to my attention! This is a known issue that we are tracking under #1148, where you have also commented. I will go ahead and close this as a duplicate so we can keep all discussions in one place.

In short, the EPUB currently has compatibility issues with Kindle's "Send to Kindle" service. While other readers, such as Apple Books and some desktop applications, work fine, Kindle has stricter EPUB validation requirements. I am aware of this issue and plan to address it.

In the meantime, you can use Calibre (a free, open-source tool) to convert the EPUB into a Kindle-compatible format. Alternatively, the PDF version works well if you prefer that option.

I will post updates in #1148 as progress is made. Thank you for your patience!

<!-- gh-comment-id:3917438335 --> @profvjreddi commented on GitHub (Feb 17, 2026): Hi @panth, Thank you for bringing this to my attention! This is a known issue that we are tracking under #1148, where you have also commented. I will go ahead and close this as a duplicate so we can keep all discussions in one place. In short, the EPUB currently has compatibility issues with Kindle's "Send to Kindle" service. While other readers, such as Apple Books and some desktop applications, work fine, Kindle has stricter EPUB validation requirements. I am aware of this issue and plan to address it. In the meantime, you can use [Calibre](https://calibre-ebook.com) (a free, open-source tool) to convert the EPUB into a Kindle-compatible format. Alternatively, the PDF version works well if you prefer that option. I will post updates in #1148 as progress is made. Thank you for your patience!
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Reference: github-starred/cs249r_book#1718