Astro vs Eleventy for Solo Developers

Quick Comparison

Astro Overview

Astro is a static site generator that ships zero JavaScript by default. You write components in .astro files using a syntax that feels like JSX with frontmatter, and you can mix in React, Vue, Svelte, or Solid components when you actually need interactivity. The islands architecture means each interactive component hydrates independently rather than bundling everything together.

The developer experience is excellent. The dev server is fast, content collections give you typed frontmatter for your markdown, and the integrations ecosystem covers everything from MDX to image optimization to RSS feed generation. Deploying to Cloudflare Pages, Vercel, or Netlify takes a single command.

Astro has become the default choice for content-heavy sites that need occasional interactivity. Documentation sites, blogs, marketing pages, and small e-commerce setups all fit naturally. The framework absorbs the complexity of supporting multiple UI libraries without making simple sites feel heavy.

Eleventy Overview

Eleventy is the static site generator for people who want a tool that gets out of the way. It supports Nunjucks, Liquid, Handlebars, Markdown, EJS, Pug, and JavaScript templates, and you can mix them in the same project. There is no required directory structure, no required config file, and no required framework on top.

The output is just HTML. Eleventy doesn't ship a JavaScript runtime, doesn't hydrate anything, and doesn't impose a component model. If you want interactivity, you write your own JavaScript and add a script tag. The result is some of the fastest, lightest static sites you can build with any tool.

For solo developers who already know HTML, CSS, and a templating language, Eleventy gets you from idea to deployed site in an evening. The learning curve is shallow because there's barely anything to learn. The plugin ecosystem covers RSS, sitemaps, image optimization, and most other common needs.

Key Differences

Component model versus templating. Astro gives you a real component system with scoped styles, props, slots, and the option to import React or Svelte for interactive bits. Eleventy gives you template includes and shortcodes. For a site with reusable cards, headers, and complex layouts, Astro's component model is more productive. For a simple blog or docs site, Eleventy's templates are plenty.

JavaScript story is fundamentally different. Astro is built around the idea that you'll want some interactivity, and the islands architecture makes that cheap. Eleventy assumes you want zero JavaScript and treats interactivity as something you'll add manually. If your site truly is static content, Eleventy's approach is simpler. If you'll eventually want a search bar, a comment widget, or a small interactive demo, Astro handles it more gracefully.

Content collections versus loose files. Astro's content collections give you typed frontmatter, schema validation with Zod, and automatic TypeScript types for your markdown. Eleventy treats markdown files as plain data you can query with collections, but there's no schema validation. For a blog with consistent post structure, Astro's approach prevents whole categories of bugs.

Build performance at scale. Eleventy is faster on huge sites with thousands of pages. Astro has been catching up with Vite and improved build pipelines, but for a 5,000-page documentation site, Eleventy will finish first. For typical solo developer sites under a few hundred pages, the difference doesn't matter.

Ecosystem direction. Astro has serious momentum, frequent releases, and integrations with basically every modern frontend tool. Eleventy is more stable and lower-velocity, which some people prefer. If you want the tool you pick today to still feel modern in three years, Astro's trajectory is stronger. If you want a tool that won't change much, Eleventy's stability is the feature.

When to Choose Astro

• You want a component-based authoring experience without shipping a heavy SPA
• You need occasional interactivity (search, forms, embedded apps)
• You like typed content collections with schema validation
• You want first-class MDX support for richer blog posts
• You want a tool with active development and a modern ecosystem

When to Choose Eleventy

• You want the absolute minimum tooling between you and HTML
• Your site is pure content with no interactivity needs
• You already know a templating language like Nunjucks or Liquid
• You're building a large site (thousands of pages) and care about build speed
• You prefer stable, slow-moving tools over fast-evolving ones

The Verdict

For most solo developers in 2026, Astro is the better default. It handles pure content sites just as well as Eleventy in terms of output (HTML with no JS), and it gives you a real escape hatch the moment you want to add an interactive component. The content collections feature alone makes blog and docs work significantly more reliable.

Eleventy is still the right call for specific cases. If you're building a content site that will never need interactivity, you already know Nunjucks or Liquid, and you want a tool that won't surprise you with breaking changes, Eleventy is genuinely lovely. The maintainer's approach to stability is rare and valuable.

The practical answer is that Astro covers more ground for more solo developers. You can build a pure static blog with it and end up with output that's basically identical to Eleventy's, and you'll have the option to add React components or a search widget later without rewriting anything. Pick Astro unless you have a specific reason rooted in simplicity or scale that pushes you toward Eleventy.