Fixing a kindle problem.
This is here for anyone who googles this problem.
I’m writing an ebook in LaTeX. I use tex4ebook to create an epub file. But when I upload it to kdp the images are tiny.
It turns out that there is a bug/incompatibility with my versions of either pdflatex or tex4ebook, but the solution was to run:
ebb -x *.png
Which gave me this: