anchor.diff:  
   In all cases, the width is converted to pt.
   
  -=== Specifying a default width
  +=== Specifying a Default Width
   
   If you want to scale all block images that don't have a pdfwidth or scaledwidth attribute specified, assign a value to the image_width key in your theme.
   
  
positive.code: (For KDP, `-a optimize` works best.
  For GitLab repository preview, either `-a optimize` or `hexapdf optimize` will do the trick.)
  
  === Enable stream compression
  
  The simplest way to reduce the size of the PDF file is to enable stream compression (using the FlateDecode method).
  You can enable this feature by setting the `compress` attribute on the document:
  
negative.code: 
  . Load your theme when running Asciidoctor PDF:
  
   $ asciidoctor-pdf -a scripts=cjk -a pdf-theme=./cjk-theme.yml -a pdf-fontsdir=GEM_FONTS_DIR,`ruby -r asciidoctor-pdf-cjk-kai_gen_gothic -e "print File.expand_path '../fonts', (Gem.datadir 'asciidoctor-pdf-cjk-kai_gen_gothic')"` document.adoc
  
  The `-a pdf-fontsdir` option is important to tell Asciidoctor PDF where to find your custom fonts.
  (Note that the inclusion of GEM_FONTS_DIR in the value is only required when using Asciidoctor PDF 1.5).
  
  Rather than using the installer from the `asciidoctor-pdf-cjk-kai_gen_gothic` gem, you can download fonts whatever way you choose.
  When using your own fonts, be sure to consult the <<docs/theming-guide.adoc#preparing-a-custom-font,Preparing a Custom Font>> section of the theming guide to find recommended modifications.
  