IIRC, not in-book, no. @poire-z will probably chime in with the actual gory details. And even if it did, you'd need horizontal margins set to 0 in the bottom menu, too. (Or possibly *negative* margins in the stylesheet, I don't recall if we support that, but I vaguely recall this having been discussed earlier here or on GH).
A long-press on the image *will* open it in the ImageViewer widget, though, and *that* is full-screen.
That said, if the intent is mainly viewing images, a CBZ is the way to go (as in, Comics/Mangas as ePub are a terrible idea).
Last edited by NiLuJe; 07-08-2020 at 02:32 AM.
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