GitHub Pages currently supports several Jekyll plugins:

Configuring Jekyll

  • Make sure you're using the latest version of the GitHub Pages Gem
  • Add a list of enabled gems (plugins) to your site's _config.yml file, such as:

    gems:
    - jekyll-mentions
    - jemoji
    - jekyll-redirect-from
    - jekyll-sitemap
    

If you don't have a _config.yml file, you will need to create one in the root of your GitHub Pages repository.

For more information, see the Jekyll documentation.