I added a “Related Posts” section at the bottom of every post by following Tom Ordonez’ post,Jekyll Related Posts. Because I’m using Vercel to deploy my Jekyll site, I had even fewer steps than Tom’s.

Step 1: I updated the Gemfile by adding the following:

gem "jekyll-tagging-related_posts"

Step 2: I updated the _config.yml file by adding the following under plugins:

  - jekyll/tagging
  - jekyll-tagging-related_posts

Step 3: I added the following code to post.html after the blog post content and before the disqus code:

{% if site.related_posts.size >= 1 %}
<div>
  <h3>Related Posts</h3>
  <ul>
  {% for related_post in site.related_posts limit: 5 %}
    <li><a href="{{ related_post.url }}">{{ related_post.title }}</a></li>
  {% endfor %}
  </ul>
</div>
{% endif %}

This screen capture from GitHub shows these changes:

Related Posts

Update 5/25/2021:

I increased the heading level for “Related Posts” from h3 to h2 so I can use both h2 and h3 in my blog posts and not have “Related Posts” look like a subheading:

Increased Heading Level for "Related Posts"