Choosing a Static Site Generator for JavaScript Projects
Picking the wrong static site generator costs you more than time. It shapes your deployment model, runtime complexity, and how much JavaScript ends up in front of your users. In 2026, the options have matured significantly, but they’ve also diverged in ways that matter. Here’s how to think through the choice.
Key Takeaways
- True SSGs like Astro 6 and Eleventy 3 differ fundamentally from hybrid frameworks like Next.js, Nuxt, and SvelteKit — treating them as interchangeable leads to poor architectural choices.
- Astro 6 is one of the strongest default choices for content-heavy sites in 2026 thanks to its islands architecture and multi-framework component support.
- Next.js 16’s stable Adapter API and OpenNext make multi-platform deployment viable, but it still carries more framework complexity than Astro or Eleventy, even for mostly static output.
- Start with rendering and infrastructure requirements, not framework popularity, when selecting a tool.
Not All “SSGs” Are the Same Thing
Before comparing tools, it helps to be precise about categories. Astro 6 and Eleventy 3 are genuinely content-focused static site generators. They’re designed to produce minimal-JavaScript output and prioritize build-time rendering.
Next.js 16, Nuxt 4, and SvelteKit are hybrid frameworks that support static output but aren’t primarily SSGs. Their default mental model is server-rendered or edge-deployed applications. Using them purely for static generation is valid, but you’re still carrying substantially more framework complexity than with a true static-first tool.
Treating these two groups as equivalent leads to poor decisions.
Framework-by-Framework Breakdown
Astro 6 has become one of the strongest choices for content-heavy sites and documentation portals. Its islands architecture ships zero JavaScript by default, with opt-in interactivity per component. Astro 6 supports React, Vue, Svelte, and Solid components in the same project. If your primary concern is content performance and you want framework flexibility, Astro is the clearest recommendation in 2026.
Eleventy 3 remains the right tool when you want simplicity and control without framework overhead. It supports multiple templating languages, has fast build times, and produces clean HTML. Eleventy 3 added full ESM support and async configuration. It’s not obsolete — it’s deliberately minimal, which is exactly what some projects need.
Next.js 16 introduced a stable Adapter API that meaningfully improves multi-platform deployment support, including OpenNext, which enables Next.js deployments on Cloudflare, AWS Lambda, and other non-Vercel runtimes. If your team is React-native and the project involves a mix of static pages, API routes, and server components, Next.js is still the most capable option. Just be clear-eyed that you’re running a full framework, not a pure SSG.
Nuxt 4 brings the same hybrid capability to the Vue ecosystem. Its static generation via nuxt generate is solid, and it integrates cleanly with headless CMS platforms. For Vue teams building marketing sites or content-driven apps that may need server features later, Nuxt 4 is the natural fit.
SvelteKit with adapter-static works well for Svelte teams building mostly-static sites. The adapter produces fully static output, but the framework assumes a server-first model, so some features require workarounds in pure static mode. It’s a good choice when the team already knows Svelte and the project is lightweight.
Gatsby still exists and receives updates following the Netlify acquisition, but the ecosystem momentum that made it the default React SSG has largely shifted toward Astro and Next.js. Gatsby’s GraphQL data layer remains useful for complex content meshes, but it’s no longer the obvious starting point for new React static projects.
Docusaurus is the practical default for documentation sites backed by larger teams or open source projects. It’s React-based, Meta-maintained, and handles versioning, i18n, and search out of the box. For a solo developer or small team building docs, Astro’s Starlight theme is a lighter-weight alternative worth considering.
A Simple Decision Framework
| Project type | Recommended tool |
|---|---|
| Content site, blog, marketing | Astro 6 |
| Documentation portal | Docusaurus or Astro Starlight |
| Low-JS, template-driven site | Eleventy 3 |
| React app with static + server needs | Next.js 16 + OpenNext |
| Vue app with hybrid rendering | Nuxt 4 |
| Svelte team, lightweight site | SvelteKit adapter-static |
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Deployment and Hosting Considerations
Your hosting target matters. Astro and Eleventy produce plain static files that deploy anywhere — Netlify, Cloudflare Pages, S3, or your own server. Next.js 16 with OpenNext has improved significantly for non-Vercel deployments, but it still requires more configuration than a true static output. Nuxt and SvelteKit have similar considerations.
If you’re targeting Cloudflare Pages or need edge-native deployment, Astro and Eleventy give you the least friction. If you need ISR or server components, you’re in hybrid framework territory regardless of which one you choose.
The Right Question to Ask First
Don’t start with “which framework is most popular.” Start with: How much JavaScript does this project actually need at runtime, and how much server infrastructure am I willing to manage?
If the answer is “minimal JavaScript, no server,” Astro 6 or Eleventy 3 will serve you better than a hybrid framework configured to act like one. If the answer involves dynamic routes, auth, or personalization, Next.js 16 or Nuxt 4 give you room to grow without switching tools mid-project.
Conclusion
The best SSG for your project is the one that matches your rendering requirements — not the one with the most GitHub stars. Be honest about how much interactivity, server logic, and infrastructure your project genuinely needs, then pick the lightest tool that meets those needs. A content site doesn’t need a hybrid framework, and an app with auth and dynamic routes won’t be well served by a pure SSG. Match the tool to the workload, and you’ll save yourself months of fighting against your own stack.
FAQs
Mostly yes. Markdown and MDX content typically port over with minimal changes since Astro supports both natively. The harder work is replacing Gatsby's GraphQL data layer with Astro's content collections and rewriting React page components into Astro components. Plan for a gradual migration rather than a single rewrite, and expect plugin replacements to take the most time.
Usually yes. Next.js carries more framework complexity even when you only need mostly static output, which means larger bundles and more build complexity than necessary. For a blog or marketing site without auth, dynamic routes, or server logic, Astro 6 or Eleventy 3 will usually produce faster sites with less configuration and simpler deployment.
Yes. Astro supports React, Vue, Svelte, and Solid components directly, and you can drop existing React components into Astro pages with minimal changes. The key shift is deciding which components need client-side hydration using directives like client:load or client:visible. Components without those directives render to static HTML at build time, shipping zero JavaScript.
Less than before. The stable Adapter API in Next.js 16 and projects like OpenNext have made it practical to deploy Next.js on Cloudflare, AWS Lambda, and other runtimes. That said, some Vercel-specific features still work best on Vercel. If platform independence is a hard requirement, evaluate your feature usage against adapter support early in the project.
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