ebook-polish(1) on Linux
The text 11c968099054, as Debian 10 (Buster) shipped it.
ebook-polish Polishing books is all about putting the shine of perfection onto your carefully crafted e-books. Polishing tries to minimize the changes to the internal code of your e-book. Unlike conversion, it does not flatten CSS, rename files, change font sizes, adjust margins, etc. Every action performs only the minimum set of changes needed for the desired effect. You should use this tool as the last step in your e-book creation process. Note that polishing only works on files in the AZW3 or EPUB formats. Whenever you pass arguments to ebook-polish that have spaces in them, enclose the arguments in quotation marks. For example: "/some path/with spaces"