Thread: Sigil 1.9.30 and unsupported media-type
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Old 07-11-2023, 06:49 AM   #4
KevinH
Sigil Developer
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The epub specification itself indicates the media types that are recognized. A reader can choose to support additional ones but need not. Use of anything outside of the recognized set requires fall backs.

So you did indeed need to truly "fix" it if you wanted an epub that meets the spec.

See https://www.w3.org/TR/epub-33/#sec-core-media-types
Last edited by KevinH; 07-11-2023 at 06:53 AM.
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