我有以下 mcve.tex
\documentclass{article}
\begin{document}
Hello World!
$Hello World!$
\[ Hello World \]
\end{document}
如果我通过 pdflatex 运行它，它会按照我的预期运行 - 以三种略有不同的风格显示“Hello world”：
[![在此处输入图片描述][1]][1]
但是，我正在制作一本电子书，因此我通过 tex4ebook 运行它并得到了以下结果：
[![在此处输入图片描述][2]][2]
...这很奇怪。但如果我碰巧使用 tikz（因此我在顶部有 \usepackage{tikz}），它确实会渲染，但看起来非常糟糕：[![在此处输入图像描述][3]][3] - 我在 bookworm 和 mupdf 上尝试过，但最重要的是在官方 kdp kindle 预览器和我自己的 kindle 上尝试过。
推测这种不良情况是因为 tikz 出于某种原因制作了低质量的 png（根据日志，实际上是一个叫做 mcve0x.png 的 png），而不是正确地制作。它不仅在这里看起来很糟糕，而且在任何实际的电子书上看起来都很糟糕，例如，它不响应字体大小的变化。
我的问题是：这里发生了什么，如何让 tex4ebook 生成在电子阅读器上完美显示的数学公式？另外，为什么要让 tikz 参与进来？
编辑-版本
- 我的 TeX 版本是：pdfTeX 3.141592653-2.6-1.40.22（TeX Live 2022/dev/Debian）
- 我的tex4ebook版本是：v0.3g
编辑-来自 tex4ebook 的完整调试日志
joe@joe-Amd-Am4-Home-Office:~/git/memorybook$ tex4ebook -a -debug -m draft mcve.tex
[INFO] mkparams: Output dir:
[INFO] mkparams: Compiler: latex
[INFO] mkparams: Latex options: -jobname=mcve
[INFO] mkparams: tex4ht.sty: xhtml,,charset=utf-8
[INFO] mkparams: tex4ht: -cmozhtf -utf8
[INFO] mkparams: build_file: mcve.mk4
[INFO] mkparams: Output format: epub
[STATUS] tex4ebook: Conversion started
[STATUS] tex4ebook: Input file: mcve.tex
[INFO] mkutils: Load extension common_domfilters
[INFO] tex4ebook: No conffile
[INFO] mkutils: Cannot open config file mcve.mk4
[INFO] exec_epub: dir mcve-epub/META-INF
[INFO] exec_epub: remove file mcve-epub/META-INF/container.xml
[INFO] exec_epub: remove dir mcve-epub/META-INF
[INFO] exec_epub: remove file mcve-epub/mimetype
[INFO] exec_epub: remove file mcve-epub/mcve.epub
[INFO] exec_epub: dir mcve-epub/OEBPS
[INFO] exec_epub: remove file mcve-epub/OEBPS/content.opf
[INFO] exec_epub: remove file mcve-epub/OEBPS/mcve.ncx
[INFO] exec_epub: remove file mcve-epub/OEBPS/mcve.css
[INFO] exec_epub: remove file mcve-epub/OEBPS/mcve.html
[INFO] exec_epub: remove dir mcve-epub/OEBPS
[INFO] exec_epub: remove dir mcve-epub
[INFO] make4ht-lib: setting param correct_exit
[INFO] make4ht-lib: setting param ext
[WARNING] tocid: char-def module not found
[WARNING] tocid: cannot fix section id's
[INFO] exec_epub: Output file: mcve.epub
[INFO] htlatex: LaTeX call: latex --interaction=batchmode -jobname=mcve '\makeatletter\def\HCode{\futurelet\HCode\HChar}\def\HChar{\ifx"\HCode\def\HCode"##1"{\Link##1}\expandafter\HCode\else\expandafter\Link\fi}\def\Link#1.a.b.c.{\AddToHook{class/before}{\RequirePackage[#1,html]{tex4ht}\RequirePackage{tex4ebook}}\let\HCode\documentstyle\def\documentstyle{\let\documentstyle\HCode\expandafter\def\csname tex4ht\endcsname{#1,html}\def\HCode####1{\documentstyle[tex4ht,}\@ifnextchar[{\HCode}{\documentstyle[tex4ht]}}}\makeatother\HCode xhtml,,charset=utf-8,charset=utf-8,epub,uni-html4.a.b.c.\input "\detokenize{mcve.tex}"' > /dev/null 2>&1
[INFO] mkutils: xhtml,charset=utf-8,epub,uni-html4,html
[INFO] mkutils: executing: tex4ht -cmozhtf -utf8 -cmozhtf -utf8 "mcve.dvi"
----------------------------
tex4ht.c (2018-07-03-10:36 kpathsea)
tex4ht -cmozhtf
-utf8
-cmozhtf
-utf8
mcve.dvi
(/usr/share/texlive/texmf-dist/tex4ht/base/unix/tex4ht.env)
(/usr/share/texlive/texmf-dist/tex4ht/ht-fonts/mozilla/charset/unicode.4hf)
(/usr/share/texlive/texmf-dist/fonts/tfm/public/cm/cmmi10.tfm)
(/usr/share/texlive/texmf-dist/tex4ht/ht-fonts/unicode/cm/cmmi.htf)
(/usr/share/texlive/texmf-dist/fonts/tfm/public/cm/cmr10.tfm)
(/usr/share/texlive/texmf-dist/tex4ht/ht-fonts/alias/lm/lm-rep-cmrm/cmr.htf)
Searching `lm-rep-cmrm.htf' for `cmr10.htf'
(/usr/share/texlive/texmf-dist/tex4ht/ht-fonts/unicode/lm/lm-rep-cmrm.htf)
[1 file mcve.html
file mcve.css
file mcve.tmp
file mcve.ncx
file content.opf
file content-part2.opf
]
Execute script `mcve.lg'
[INFO] make4ht-lib: executing: t4ht "mcve.dvi"
sh: 1: dvipng: not found
----------------------------
t4ht.c (2018-07-04-14:25 kpathsea)
t4ht mcve.dvi
(/usr/share/texlive/texmf-dist/tex4ht/base/unix/tex4ht.env)
Entering mcve.lg
System call: dvipng -T tight -D 144 -bg Transparent -pp 2:2 mcve.idv -o mcve0x.png
--- Warning --- System return: 32512
Entering mcve.css
Entering mcve.tmp
[INFO] mkutils: Parse LG
[INFO] make4ht-lib: parse_lg process file: mcve.html
[INFO] make4ht-lib: parse_lg process file: mcve.tmp
[INFO] mkutils: Copy: cp "mcve.html" "mcve-epub/OEBPS"
[INFO] mkutils: Copy: cp "mcve.css" "mcve-epub/OEBPS"
[INFO] exec_epub: Mimetype for tmp is not registered
[INFO] mkutils: Copy: cp "mcve.ncx" "mcve-epub/OEBPS"
[INFO] exec_epub: Mimetype for opf is not registered
[INFO] exec_epub: Mimetype for opf is not registered
[INFO] mkutils: Copy: cp "mcve0x.png" "mcve-epub/OEBPS"
[ERROR] mkutils: File mcve0x.png doesn't exist
cp: cannot stat 'mcve0x.png': No such file or directory
[INFO] mkutils: Copy: cp "content.opf" "mcve-epub/OEBPS"
HTML Tidy for Linux version 5.6.0
[INFO] exec_epub: Tidy ncx 0
[INFO] exec_epub: Tidy opf 0
[INFO] exec_epub: Pack mimetype 0
[INFO] exec_epub: Pack metadir 0
[INFO] exec_epub: Pack outputdir 0
[INFO] exec_epub: Copy generated epub
[INFO] mkutils: Copy: cp "mcve-epub/mcve.epub" "mcve.epub"
[STATUS] tex4ebook: Conversion finished
joe@joe-Amd-Am4-Home-Office:~/git/memorybook$