How to Convert PNG Files to ePUB

Question

I am updating my KIndle book...updates to the paperback are done. My first try on the INDD export to EPUB process was successful, but I don't like that it has justified the text margins. I recall that the designer, early on, showed me that version and I didn't like it. (Opening it in Apple Books, it looks fine--no justification.) He went back to work on a different solution. In closing out the project, they delivered individual PNG files, INDD files, and PDFs--warning me that their solution had been unusual. I think they created the ePUB files from the PNGs. Does this sound plausible? I have created PNGs of the 10 corrected pages and could work with those--but don't know how. Can someone direct me to a site with directions for this process? PNG to ePUB?? I have 2 attachements.
 
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James Gifford—NitroPress · Answer

I think we've discussed this over in the amateur forums. 🙂

There's no good way to get from either PDF or PNGs to EPUB, not without dragging everything through multiple stages and a lot of effort to get a third-rate result... and fixed-page EPUB, FXL, is third-rate to start with. If the book was originally composed in InDesign, export directly to FXL should have been simple and does not require any intermediate step of export to PNG... although, having had too much experience with the amateur/kitchen table e-book world, they could have used some workflow taken from the Wonderland division of Willy Wonka's Flex-O-Book Factory.

The simple and best solution to reach a Kindle edition would be to export from InDesign to reflowable EPUB.

The fairly simple and not-very-good solution would be to export to FXL EPUB, but as Kindle devices don't display fixed-page files (only the tablet and desktop apps do), it's not what I would consider a worthwhile path.

As far as trying to hack together some solution from the pieces you have... well, it could be done. But there are no good results down that path.

Do you have/can you get the original InDesign files? That's where all the good solutions start.

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