Astro and Next.js are both excellent tools, but they are optimised for fundamentally different use cases. Next.js is a full-stack React framework designed for interactive web applications. Astro is a content-focused framework designed to ship minimal JavaScript to the browser. For marketing sites — brochure pages, landing pages, blogs, documentation — this distinction has significant implications for performance, developer experience, and long-term maintenance. Here is a thorough comparison to help you make the right call.
Performance: Zero JS vs Hydration Cost
Astro's defining architectural decision is its zero-JavaScript-by-default output. An Astro marketing page ships pure HTML and CSS unless you explicitly opt components into client-side interactivity using client directives (client:load, client:visible, client:idle). A typical marketing page — hero section, feature grid, testimonials, FAQ, CTA — needs no client-side JavaScript at all. The result is sub-second Time to Interactive on virtually any device and network condition.
Next.js, even with Server Components in the App Router, still ships the React runtime and the client component tree to the browser. For a simple marketing page, this means 80-150 KB of baseline JavaScript before your application code. The framework has made significant progress with partial prerendering and streaming SSR, but the fundamental cost of hydration remains. On a fast connection and modern device, this is invisible. On a 3G connection in a developing market, it is the difference between a 1.5-second and a 4-second page load.
Developer Experience and Component Model
Both frameworks offer excellent developer experience, but they target different preferences:
- Astro's component model: Astro components use a frontmatter-plus-template syntax similar to PHP or classic server-side templating. They render entirely at build time with no client-side lifecycle. You can import and render React, Vue, Svelte, or Solid components within Astro pages — Astro is genuinely framework-agnostic. This is ideal for teams with mixed framework experience or those migrating incrementally.
- Next.js's component model: Everything is React. Server Components and Client Components share the same JSX syntax, with the "use client" directive marking the boundary. If your team is already invested in the React ecosystem — component libraries, state management, testing patterns — Next.js lets you leverage all of that directly.
- Routing: Both use file-based routing. Astro's routing is simpler — files in src/pages become routes with no additional configuration. Next.js App Router introduces layouts, loading states, error boundaries, and parallel routes at the file system level, which is powerful for applications but adds complexity that marketing sites rarely need.
- Content handling: Astro's Content Collections provide a type-safe, schema-validated system for managing Markdown and MDX content — built-in and optimised for content-heavy sites. Next.js has no built-in content system; you bring your own CMS client, MDX pipeline, or content layer.
Build Output and Hosting
Astro defaults to static site generation (SSG), producing a folder of HTML files that deploy to any static host — Cloudflare Pages, Netlify, S3, or a simple NGINX container. No Node.js server required in production. Astro also supports SSR via adapters (Node, Cloudflare Workers, Vercel Edge), but for marketing sites, static output is almost always the right choice.
Next.js has moved toward requiring a Node.js runtime in production, even for statically pre-rendered pages if you use any App Router features. While you can use output: 'export' for fully static output, this disables many App Router features. In practice, most Next.js deployments require either Vercel's hosting platform or a self-managed Node.js server, which increases operational complexity and cost for a site that could be static files.
When to Choose Each Framework
The decision is clearer than the discourse suggests:
- Choose Astro when: Your site is primarily content and marketing pages. You want the best possible performance with minimal effort. Your team includes developers with varied framework backgrounds. You want static output that deploys anywhere with zero operational overhead.
- Choose Next.js when: Your marketing site is part of a larger React application (dashboard, portal, SaaS product) and sharing a codebase and component library matters. You need server-side personalisation, A/B testing at the edge, or authenticated sections. Your team is deeply invested in the React ecosystem.
For the majority of marketing sites — company websites, product landing pages, documentation portals, blogs — Astro delivers better performance with less complexity. This very site is built with Astro for exactly these reasons.
Choosing the Right Foundation
Framework choice is a foundation decision that affects performance, developer velocity, and hosting costs for the lifetime of the project. Born Digital builds marketing sites and content platforms on both Astro and Next.js, and we recommend the framework that best fits the project requirements rather than defaulting to one. If you are planning a new marketing site or considering a framework migration, our development team can evaluate your needs and recommend the right technical foundation.