Thread: Creating a sideloaded EPUB compatible with Kindle TTS / VoiceView
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Old 08-05-2026, 04:15 PM   #2
shamanNS
Wizard
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Posts: 1,202
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Join Date: Feb 2010
Location: Serbia
Device: Kindle PW5, Kobo Libra 2, Kindle PW1
Exth header 404 value should control TTS for mobi and azw3 formats.

https://wiki.mobileread.com/wiki/MOBI#EXTH_Header


Editor for modifying those things:

https://github.com/kwkoo/Java-Mobi-Metadata-Editor
Last edited by shamanNS; 08-05-2026 at 04:17 PM.
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