Jekyll vs Astro: Which Static Site Generator Should You Use in 2026?

Astro launched in 2021 and quickly became one of the most talked-about static site generators. Jekyll has been around since 2008 and remains one of the most widely used. In 2026 both are mature, actively maintained, and capable of building fast, beautiful sites. So how do you choose?

What each tool is

Jekyll is a Ruby-based static site generator built around Markdown content and Liquid templating. It has no JavaScript framework dependency, outputs plain HTML, and integrates natively with GitHub Pages. It is the go-to tool for simple, content-focused sites.

Astro is a JavaScript-based web framework that pioneered the “islands architecture” — by default it ships zero JavaScript to the browser, but it lets you embed interactive components from React, Vue, Svelte, Solid, or any other framework in isolated islands. It handles both static generation and server-side rendering.

Performance: the key difference

Both Jekyll and Astro ship minimal JavaScript by default. But their approach differs fundamentally.

Jekyll outputs plain HTML with zero JS unless you add it yourself. There is no framework overhead at all.

Astro introduces the concept of component islands — interactive components that hydrate on the client. A static Astro page also ships zero JavaScript, but the moment you add an interactive component, Astro ships only that component’s JS, not a full framework bundle. This is more efficient than React or Vue, but still more than Jekyll’s zero.

For pure content sites (blogs, docs, portfolios): Jekyll and Astro perform equally well — both score 99–100 on Lighthouse with no effort.

For sites with some interactivity (search, tabs, carousels): Astro has an architectural advantage — it handles interactive components more cleanly than adding jQuery or vanilla JS to Jekyll.

Learning curve

Jekyll requires: YAML front matter, Markdown, and Liquid templating. No programming knowledge required. A non-developer can be productive in an afternoon.

Astro requires: Markdown or MDX, the .astro component syntax (similar to JSX), and JavaScript/TypeScript. If you want to use component frameworks, you need to know React, Vue, or Svelte. The barrier is meaningfully higher.

For non-developers or those new to web development: Jekyll wins.

For JavaScript developers: Astro’s component model will feel natural.

Content handling

Both tools handle Markdown content well. Astro adds MDX support out of the box — Markdown with embedded JavaScript components. This is powerful for interactive documentation or content with embedded demos.

Jekyll’s Liquid templating is simpler but less expressive. You cannot embed dynamic components mid-content without reaching for JavaScript.

For a pure blog or documentation site, Markdown is enough. MDX becomes valuable when your content itself needs to be interactive — embedding a live code editor in a tutorial, for example.

Themes and ecosystem

Jekyll has a larger, more established theme ecosystem. Hundreds of free themes exist on GitHub and dedicated marketplaces like JekyllHub. Themes are plain HTML, CSS, and Liquid — easy to understand and modify without a build step.

Astro themes exist and are growing rapidly — the official Astro themes directory has hundreds of options. But many require framework knowledge (React or Vue) to customise meaningfully.

Winner for theme selection and ease of customisation: Jekyll.

Build times

Site size	Jekyll	Astro
50 pages	~3 seconds	~5 seconds
500 pages	~15 seconds	~20 seconds
5,000 pages	~2–3 minutes	~3–5 minutes

Both are fast. Jekyll has a slight edge on large sites because it does not bundle JavaScript, but the difference is rarely meaningful in practice.

Hosting

Both deploy to Netlify, Cloudflare Pages, and Vercel with zero configuration. Jekyll deploys natively to GitHub Pages. Astro requires a build step even for GitHub Pages (via GitHub Actions), but this is well-documented and straightforward.

When to choose Jekyll

You want simplicity above all else
You are not a JavaScript developer
You want native GitHub Pages hosting with no build configuration
Your content is Markdown and your layouts are HTML — no framework components needed
You want themes you can read and modify without understanding a component system

When to choose Astro

You are a JavaScript developer comfortable with components
You want to mix static content with interactive UI components
You want MDX — Markdown with embedded components
You need server-side rendering alongside static pages (Astro handles both)
You are migrating from a framework-heavy setup and want to reduce JavaScript

The bottom line

For a blog, portfolio, documentation site, or small business website with no interactive components: Jekyll is the simpler, faster path to production. It has more themes, easier hosting, and a lower learning curve.

For a site that needs some interactive components embedded in content — a tutorial platform, a documentation site with live examples, a landing page with tabs and demos — Astro is the better architectural choice.

In 2026, Astro is arguably the more exciting tool. But exciting does not always mean right for your project. If your site is primarily words, Jekyll is still the most efficient path from blank page to live site.

Browse free and premium Jekyll themes on JekyllHub to see what is possible.

Island architecture vs full static: the key technical difference

Astro’s most distinctive technical feature is its island architecture. Islands are interactive components embedded in otherwise static pages — a video player, a filter UI, a live search box — that hydrate independently and only when needed. The rest of the page is pure static HTML with zero JavaScript. This approach dramatically reduces JavaScript bundle size compared to frameworks that hydrate the entire page.

Jekyll’s model is different: the page is purely static HTML, and any interactivity is added via standalone JavaScript files that you include explicitly. A search feature might be Pagefind (which runs entirely in the browser from a pre-built index); a comment section is a third-party script; a theme toggle is a small vanilla JS snippet. There are no components, no virtual DOM, no hydration — just HTML, CSS, and as much JavaScript as you consciously add.

For most content sites, Jekyll’s model produces a simpler, faster result because the baseline JavaScript weight is zero. For sites that genuinely need interactive components in specific places — a pricing calculator, a live API demo, a filterable data table — Astro’s island model is more elegant than the alternatives: you write the component in React or Vue, place it on the page with client:visible, and Astro handles the rest.

Build speed and developer feedback loop

Astro’s build speed is excellent — comparable to Hugo, which is the benchmark for fast static site generation. Astro uses Vite’s development server for near-instant hot module replacement during development, meaning you see changes reflected in the browser within milliseconds of saving. For JavaScript-heavy projects, this feedback loop is significantly faster than Jekyll’s watch mode, which rebuilds the full site on each change.

Jekyll’s build speed on pure content sites is adequate — a hundred-post blog builds in under a second, a thousand-post blog in five to ten seconds. Incremental builds (--incremental flag) make day-to-day writing workflow fast since only changed files are rebuilt. Where Jekyll noticeably slows is on very large sites or complex Liquid templates with expensive operations (sorting thousands of posts, generating thousands of archive pages).

The development feedback loop matters most when you are actively building or debugging, not when you are writing content. If your workflow is “write post, preview, commit, push,” both tools provide a comfortable feedback loop. If your workflow is “build complex UI component, iterate on design, test edge cases,” Astro’s Vite-powered development server is the better choice.

Deployment and hosting considerations

Astro and Jekyll both produce deployable static files and work well on all major static hosting platforms. Astro’s default output is a dist/ folder of HTML, CSS, and JavaScript; Jekyll’s default is _site/. Both deploy identically to Netlify, Vercel, Cloudflare Pages, and GitHub Pages.

The difference appears when Astro’s server-side rendering or hybrid rendering mode is used. Astro’s SSR mode generates pages on demand at request time rather than at build time — which requires a Node.js runtime, not just a static file server. Netlify, Vercel, and Cloudflare Pages all support Astro SSR through serverless functions, but this changes the hosting from a simple static CDN to a serverless compute model with different cost and latency characteristics.

For Jekyll, there is no SSR equivalent — it is always fully static. If you need server-side rendering for any page type, Jekyll cannot provide it; you need a different tool or a serverless function handling that specific route. This is rarely a limitation for content sites but occasionally matters for sites with personalisation, authentication-gated content, or search that requires server-side relevance scoring.

Choosing between Jekyll and Astro in 2026

The decision framework: if you are building a content site — a blog, a documentation site, a portfolio, a marketing site — and interactivity requirements are modest, Jekyll is the simpler, more appropriate tool. The theme ecosystem is richer, the deployment to GitHub Pages is seamless, and the mental model (write Markdown, build HTML) is immediately intuitive.

If you are building a site that mixes static content with interactive components — a learning platform with embedded exercises, a tool documentation site with live API explorers, a product site with a complex pricing configurator — Astro’s island architecture handles this use case more elegantly than Jekyll’s alternatives.

If you are a JavaScript developer who prefers to work in a Node.js ecosystem rather than Ruby, Astro may simply feel more natural regardless of the use case. Tool comfort matters for long-term productivity, and working in an uncomfortable ecosystem consistently slows you down.

Both Jekyll and Astro are excellent, well-maintained tools with active communities and strong hosting support. Neither is definitively better in the abstract — they are optimised for different use cases and different developer profiles. Make the choice based on your specific project requirements and your own comfort with the underlying ecosystem.