Jekyll

It is a static site generator with built-in support for GitHub Pages and a simplified build process. Jekyll uses HTML files and creates a completely static website based on your choice of layouts.

Jekyll is a plugin for the GitHub pages. If we breakdown into easy steps, first, if there is any website and if we do not want to make it from the scratch, this website will provide some static web page Templates which will also be responsive. We can just search jkill.com in Google Chrome and we can find many types of static web pages, and layouts on the JQ website, and if we select one website, we can see all the HTML, CSS, and JavaScript files of the template and we can copy it and host it on the website. So basically, It reduces the work of a developer to build a website from the scratch, and all files will be in a GitHub account. So we just have to Click on the fork button in order to copy it to the web GitHub account, and after copying one could easily use it, in just one click. That is why this plugin is mostly used in GitHub Web pages these days.