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Jekyll

The classic Ruby-based static site generator that powers GitHub Pages. Simple, blog-aware, and static.

What is Jekyll?

Jekyll is a static site generator written in Ruby that transforms plain text into static websites and blogs. It is widely considered the “grandfather” of the modern static site generator movement. Jekyll takes Markdown text files, runs them through the Liquid templating engine, and renders ready-to-publish HTML.

Its tight integration with GitHub Pages (where it is the default build engine) has cemented its popularity. However, it is now considered a Legacy option, mostly maintained for existing sites and CloudCannon users.

Key Features

1. Simple and Blog-Aware

Jekyll was built with blogging in mind. It has native support for categories, tags, permalinks, and posts out of the box, making it incredibly fast to set up a blog without configuring complex data collections.

2. GitHub Pages Integration

You can push a Jekyll site to a GitHub repository, and GitHub pages will automatically build and deploy it. This zero-config deployment flow is a major selling point.

3. Liquid Templating

Jekyll uses Liquid, a mature and easy-to-learn templating language created by Shopify. Liquid allows for logical processing, loops, and variables within HTML templates.

4. Extensive Plugin System

While simple at its core, Jekyll has a massive ecosystem of plugins (gems) for SEO, sitemaps, RSS feeds, and more.

Architecture

Jekyll is a build-time tool. It does not run on the server during requests.

  • Stack: Ruby.
  • Input: Markdown, Textile, HTML.
  • Templating: Liquid.
  • Output: Static HTML, CSS, JS.

Who is it for?

  • Developers: Who define their content in Markdown and want version control.
  • Open Source Projects: For free documentation hosting on GitHub Pages.
  • Personal Blogs: For a simple, hacker-friendly blogging workflow.

Pros and Cons

  • Pros: Free Hosting (GitHub Pages), Simplicity, Stability, Huge Community.
  • Cons: Slower Build Speed, Ruby Dependency, Lack of modern Asset Pipeline.

Conclusion

Despite the rise of faster generators like Hugo and JS-heavy frameworks like Next.js, Jekyll remains a solid, reliable choice. For developers who want a “set it and forget it” blog or project site hosted for free on GitHub, Jekyll is still the gold standard.