NAME

       ebook-polish - ebook-polish

          ebook-polish [options] input_file [output_file]

       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"

[CÁC TÙY CHỌN]

       --add-soft-hyphens, -H
              Add  soft  hyphens  to  all  words in the book. This allows the book to be rendered
              better when the text is justified, in readers that do not support hyphenation.

       --compress-images, -i
              Losslessly compress images in the book, to reduce the filesize,  without  affecting
              image quality.

       --cover, -c
              Path  to  a  cover image. Changes the cover specified in the e-book. If no cover is
              present, or the cover is not properly identified, inserts a new cover.

       --embed-fonts, -e
              Embed all fonts that are referenced in the document and are not  already  embedded.
              This  will  scan  your  computer for the fonts, and if they are found, they will be
              embedded into the document. Please ensure that you  have  the  proper  license  for
              embedding the fonts used in this document.

       --help, -h
              show this help message and exit

       --jacket, -j
              Insert  a  "book  jacket"  page at the start of the book that contains all the book
              metadata such as title, tags, authors, series, comments,  etc.  Any  previous  book
              jacket will be replaced.

       --opf, -o
              Path to an OPF file. The metadata in the book is updated from the OPF file.

       --remove-jacket
              Remove a previous inserted book jacket page.

       --remove-soft-hyphens
              Remove soft hyphens from all text in the book.

       --remove-unused-css, -u
              Remove  all  unused CSS rules from stylesheets and <style> tags. Some books created
              from production templates can have a large number of extra  CSS  rules  that  don't
              match  any  actual  content.  These  extra rules can slow down readers that need to
              parse them all.

       --smarten-punctuation, -p
              Convert plain text dashes, ellipsis, quotes,  multiple  hyphens,  etc.  into  their
              typographically correct equivalents. Note that the algorithm can sometimes generate
              incorrect results, especially when single quotes at the start of  contractions  are
              involved.

       --subset-fonts, -f
              Subsetting  fonts  means  reducing  an embedded font to contain only the characters
              used from that font in the book. This greatly reduces the size of  the  font  files
              (halving  the  font file sizes is common). For example, if the book uses a specific
              font for headers, then subsetting  will  reduce  that  font  to  contain  only  the
              characters  present  in  the  actual headers in the book. Or if the book embeds the
              bold and italic versions of a font, but bold and italic text is relatively rare, or
              absent  altogether,  then the bold and italic fonts can either be reduced to only a
              few characters or completely removed. The only downside to subsetting fonts is that
              if, at a later date you decide to add more text to your books, the newly added text
              might not be covered by the subset font.

       --upgrade-book, -U
              Upgrade the internal structures of the book, if possible.  For  instance,  upgrades
              EPUB 2 books to EPUB 3 books.

       --verbose
              Produce more verbose output, useful for debugging.

       --version
              show program's version number and exit

AUTHOR

       Kovid Goyal

COPYRIGHT

       Kovid Goyal