ePubLift/epublift cli-v5.2.0 on GitHub

An imported PDF has its cover. When page 1 is a cover picture,
it becomes the EPUB's cover and opens the book, instead of coming through as
separate photos and paragraphs of its lettering. A cover whose lettering is
set in fonts over the picture is not found yet.
Imported books carry images a reader can show: at most 1,920 pixels on
the longest side (an 8" reader at 300 ppi), and 2,560 for the cover (Amazon
KDP's ideal). A JPEG keeps its own quality, gray stays gray, and nothing is
enlarged or kept when it would not be smaller. import only; the optimizer
does not resize.

import reads PDFs through paginaverto 0.3.1: words broken by a
soft hyphen at a line end are joined again (about 2,000 to 4,500 broken words
in 3 of our 12 test PDFs), and fewer paragraphs break in the middle of a
sentence.

import writes a DOCTYPE and lang in every XHTML file (PDF and
Markdown). EPUB 3 does not require the DOCTYPE, but Sigil "cleaned" every file
without one on open and said so.
An imported PDF gets its title and author from the file name when the PDF
has none: Title (Author) (site.one, site.two).pdf becomes "Title" by
Author, not the whole file name. Site names, download numbers and a
computer's name as author ("Lenovo") are left out.
Imported books have a style sheet (PDF and Markdown): indented,
justified, hyphenated paragraphs, and images that fit the screen. Before,
a large picture could overflow it.
No more "Section 1" in an imported book. The part of a PDF before its
first heading (cover, imprint, blurb) got an English heading "Section 1" that
the book does not have, and a Markdown chapter without a heading was listed
as "Section n". Such a part now has no made-up heading and stays out of the
table of contents; a book with no heading at all lists its title once.

Full Changelog: cli-v5.1.0...cli-v5.2.0