MobileRead Forums - View Single Post - Disappearing images (png converted to jpg)

Liudprand · 10-04-2022, 07:35 PM

I have quite a few books that are very large - in the hundreds of mb, in some cases.

I've worked out how to use ImageMagick to convert the png files (which are nearly always - perhaps always - used in the books in question, rather than jpegs) into jpg format, and then delete the png files from the book, and finally import the jpg files into the book.

Trouble is, although all of the new jpg image files appear in the Calibre editor exactly where the old png files did, when I open up the book they're all (apart from the cover image) completely blank - just showing "img" at the top.

Do I have to somehow re-link each image with its location within the book? If so, how... ?

10-04-2022, 07:35 PM	#1
Liudprand Zealot Posts: 133 Karma: 10 Join Date: Nov 2021 Device: Kobo Libra 2	Disappearing images (png converted to jpg) I have quite a few books that are very large - in the hundreds of mb, in some cases. I've worked out how to use ImageMagick to convert the png files (which are nearly always - perhaps always - used in the books in question, rather than jpegs) into jpg format, and then delete the png files from the book, and finally import the jpg files into the book. Trouble is, although all of the new jpg image files appear in the Calibre editor exactly where the old png files did, when I open up the book they're all (apart from the cover image) completely blank - just showing "img" at the top. Do I have to somehow re-link each image with its location within the book? If so, how... ?