Adding Jekyll plugins to a GitHub Pages site
GitHub Pages is available in public repositories with GitHub Free, and in public and private repositories with GitHub Pro, GitHub Team, GitHub Enterprise Cloud, and GitHub Enterprise Server.
You can further customize your GitHub Pages site by adding Jekyll plugins.
Configuring Jekyll plugins
You must edit your _config.yml file to add Jekyll plugins to your GitHub Pages site.
Sitemaps for GitHub Pages
GitHub Pages can automatically create sitemaps for your projects.
Repository metadata on GitHub Pages
Common repository information, such as the project name and description, is available to Jekyll sites hosted on GitHub Pages.
Redirects on GitHub Pages
When a Jekyll post or page's title or date changes, existing links to the site may break. For the security of our users, GitHub Pages does not support customer server configuration files such as .htaccess or .conf. However, using the Jekyll Redirect From plugin, you can automatically redirect visitors to the updated URL.
Emoji on GitHub Pages
You can use emoji within any Jekyll page or post, just like you would in a comment or issue within a repository on GitHub Enterprise.
"@Mentions on GitHub Pages"
You can use @mentions within any Jekyll page or post, just like you would in a comment or issue within a repository.