How to add Google Analytics to Pandoc webpages

Pandoc can be used to convert Markdown files to HTML webpages. If you are hosting these webpages online, it might be useful to get some stats on them. Google Analytics is a popular service to do this.

• Signing up for Google Analytics is free.
• After signup, create an account for your website.
• You should be able to find the section where it shares a tracking code. It looks something like this:

<!-- Global site tag (gtag.js) - Google Analytics -->
<script async src="https://www.googletagmanager.com/gtag/js?id=UA-xxxxxxxxx-1"></script>
<script>
  window.dataLayer = window.dataLayer || [];
  function gtag(){dataLayer.push(arguments);}
  gtag('js', new Date());
  gtag('config', 'UA-xxxxxxxxx-1');
</script>

• Paste your tracking code into a file, say header.txt.
• For the tracking to work, the tracking code needs to be embedded in the head section of every webpage on your website. To embed this tracking code in every HTML webpage you generate using Pandoc, use the --include-in-header or -H option. For example:

$ pandoc --standalone --include-in-header=header.txt in.markdown -o out.html

Tried with: Pandoc 1.19.2.4 and Ubuntu 18.04