Latex formulas support

[vb64]

I recently received an email.

Dear Vitaly,

thank you for the markdown-pdf.  it’s wonderful.
I ran into problem trying to render latex (example as below).

I did some googling that people were suggesting to add the <script …> at the start of the markdown message.  I tried it and still does not work.

Just wonder if i may possibly get any help/guidance from you please.

thank you truly much

Example.

my_pdf = MarkdownPdf(toc_level =2)

my_txt = """
<script type="text/javascript" src="http://cdn.mathjax.org/mathjax/latest/MathJax.js?config=TeX-AMS-MML_HTMLorMML"></script>
<script type="text/x-mathjax-config"> MathJax.Hub.Config({ tex2jax: {inlineMath: [['$', '$']]}, messageStyle: "none" });</script>
# Title

## TLDR

blabal

## result

![key table](./df_styled.png)

### test some math formula

write some $$\sum_1^n x_n$$
"""

my_pdf.add_section(Section(my_txt))

my_pdf.meta['title']='jz_test'
my_pdf.meta['author']='jz'
my_pdf.save('jz_pdf_test.pdf')

[vb64]

I tried to use the js code specified in the email in two ways.

1. As specified in the email, when the js code is included in the markdown string and used when converting from markdown to html by the markdown-it-py library

2. As the value of the user_css parameter when converting html to pdf by the PyMuPDF library

LATEX_CSS = """
<script type="text/javascript" src="http://cdn.mathjax.org/mathjax/latest/MathJax.js?config=TeX-AMS-MML_HTMLorMML"></script>
<script type="text/x-mathjax-config"> MathJax.Hub.Config({ tex2jax: {inlineMath: [['$', '$']]}, messageStyle: "none" });</script>
"""

from markdown_pdf import Section, MarkdownPdf

pdf = MarkdownPdf()
pdf.add_section(
  Section("# Latex test\n$$\\sum_1^n x_n$$"),
  user_css=LATEX_CSS
)
pdf.save("latex.pdf")

Both options did not lead to the desired result.

I myself have encountered the need to include mathematical formulas in a pdf document created from markdown a couple of times. I solved this problem by creating a formula in MS Word. Then I took a screenshot of this formula and added this screenshot to markdown as an image.

For me, this method turned out to be quite working, because I very rarely encounter the need to use mathematical formulas in documents. But with intensive use of mathematical formulas, this method becomes inconvenient.

[vb64]

I think this task could be automated in markdown-pdf by including the latex formula in markdown as code with a special tag.

When loading markdown content, markdown-pdf can extract such sections, convert them to images and insert them into a pdf document.

To implement this task, a python library is required that meets the following conditions.

1. The library installation via the pip package manager.

2. The library must convert latex code to a raster image (png/jpg/etc).

I rarely deal with mathematical formulas and have almost never used latex. Therefore, it will be extremely difficult for me to assess the quality of such a library. How fully it covers all variants of latex code and so on.

I ask for help from members of the markdown-pdf user community who often use latex.

Please, recommend a python library with the properties described above and then we will be able to implement support for latex mathematical formulas in markdown-pdf.

[vb64]

Math support in Markdown