Astro vs Next.js for Marketing Sites: Which Framework Fits Your Project

Both are JavaScript meta-frameworks. Both build fast websites. The “which is better” debate online is mostly developers proving a point. Here’s the actual breakdown for people who need to ship a marketing site that still works in two years — without re-architecting it every time a framework team ships a breaking release.

How These Two Frameworks Differ at the Architecture Level

Next.js and Astro start from different default assumptions, and that difference compounds into everything downstream.

Next.js is React, all the way down. Every page, every component — it’s React. That’s not a criticism; React is the most battle-tested UI library in the industry. But “React by default” means the full React runtime ships to the browser unless you deliberately opt out of it. For a marketing site with five pages and a contact form, you’re still loading the infrastructure for a complex interactive application.

Astro starts from a different premise: everything is static HTML until you explicitly say it isn’t. Components can be written in React, Vue, Svelte, Solid, or Astro’s own syntax — they render to plain HTML at build time. If a component needs client-side interactivity, you hydrate only that piece using Astro’s Islands architecture. The rest of the page stays as flat HTML.

Next.js is a full-spectrum framework — marketing site to full-stack application, it handles all of it. Astro is a purpose-built tool for content-heavy sites that happen to need some interactivity. Neither is a bad choice. They’re solving different problems, which is the point most framework comparisons skip.

Performance — The Numbers

The performance difference isn’t theoretical. Astro ships 90% less JavaScript than Next.js for static content pages. That’s from Astro’s own 2025 benchmarks, and it’s consistent with third-party testing.

Real-world measurement: a standard blog built in Next.js loads in 2.8 seconds. The same content built in Astro loads in 0.9 seconds. That’s a 67% speed improvement — not from clever optimization, but from the framework’s default behavior (Eastondev, 2025).

On Lighthouse, content sites built in Astro routinely score 95–100. Well-optimized Next.js sites land in the 85–95 range. The ceiling is lower because Next.js hydrates the React runtime on every page, even when the page has no interactive elements. That’s not a bug — it’s how the framework works. The cost is baked in.

Why does this gap exist? When Next.js renders a page, it ships the full client-side React bundle so the browser can take over rendering. On a marketing page that just displays content, this runtime is dead weight. Astro eliminates it by never loading it in the first place. If you need a reactive dropdown in your navigation, Astro loads React only for that component — the rest of the page stays static.

For marketing sites, this matters. Every second of load time has a documented impact on bounce rate and conversion. Google’s Core Web Vitals are a direct ranking factor. A framework that defaults to lean output gives you a structural SEO and conversion advantage before you write a line of content.

SEO — Where They Land

Both frameworks support strong SEO implementations. Neither is incompatible with ranking well. But there are structural differences worth understanding before you commit.

Astro’s zero-JavaScript default is an advantage for crawler compatibility. Googlebot renders JavaScript, but plain HTML is still processed more reliably and at lower resource cost. A page that’s flat HTML the moment it’s served doesn’t depend on JS execution to display its content. That’s a cleaner signal.

Next.js added the App Router in 2023. It’s a significant architectural shift — React Server Components, a new routing system, changed data fetching patterns. The goal was better performance. The reality has been fragmentation: Next.js developers now operate across two distinct mental models (Pages Router vs. App Router), and Core Web Vitals issues became a documented complaint during the transition period. If your development team isn’t current on Next.js, you’re building in complexity from day one.

On metadata and structured data — both frameworks support the full range of SEO implementation. Neither automates it. You’re still writing meta tags, structuring your schema markup, and managing canonical URLs yourself. This is a meaningful contrast to WordPress with Yoast or RankMath, where that layer is handled through a UI. If your team expects a framework to manage SEO infrastructure, neither Astro nor Next.js will meet that expectation without significant additional tooling.

Developer Experience — The Honest Comparison

Next.js has the largest React developer pool in the industry. If you need to hire, extend the codebase, or hand it off to a new team, finding someone who knows Next.js is straightforward. That’s a real operational advantage that doesn’t show up in Lighthouse scores.

Astro’s developer experience has improved significantly. State of JS 2025 shows Astro’s satisfaction score leads Next.js by 39 percentage points. Developer retention is at 94% — meaning developers who use Astro once continue using it. Adoption is at 25% and growing.

The simpler mental model is the main reason. Astro’s component syntax is close to HTML. The rules around when things are server-rendered versus client-rendered are explicit and predictable. You write an Island when you need interactivity. You don’t write one when you don’t. That clarity reduces bugs and onboarding time for developers coming from non-React backgrounds.

Next.js App Router complexity is a legitimate friction point, not a developer complaint. The framework now has two routing paradigms, server components that behave differently from client components in non-obvious ways, and caching behavior that has been revised multiple times across releases. For a marketing site, this complexity offers no benefit — you’re carrying it without using any of it.

Astro’s weakness is the smaller talent pool. It’s growing, but if you need a developer on short notice who already knows the framework, your options are narrower than they are with Next.js. For long-term projects, that calculus matters.

Hosting and Operations

This is where the business implications of the technical decision become concrete.

Astro’s default output is static HTML, CSS, and JavaScript files. Those files deploy to any static hosting service — Cloudflare Pages, Netlify, Vercel, AWS S3, GitHub Pages. Monthly cost for a marketing site with normal traffic is near zero on most of these platforms. There is no server to maintain, no edge function to scale, no infrastructure to monitor.

Next.js runs most efficiently on Vercel, the company that builds it. That’s not a coincidence. Vercel has made significant investments in Next.js-specific infrastructure — Edge Middleware, Image Optimization, Incremental Static Regeneration — and these features work best, sometimes exclusively, on their platform. For small projects, Vercel pricing is fine. At scale, or for clients with strict vendor neutrality requirements, the soft lock-in becomes a real consideration.

You can self-host Next.js on any Node.js server. But you lose some of the optimizations that make Next.js fast, and you inherit the complexity of managing that infrastructure. The path of least resistance with Next.js points toward Vercel, and the path of least resistance with Vercel involves their pricing model.

Astro’s portability is a structural advantage for marketing sites that get handed to clients or agencies after launch. Any host, any CDN, no server dependencies. If a client’s in-house team needs to take it over in two years, the deployment model won’t be a constraint.

Which One for a Marketing Site

Factor	Astro	Next.js
Default performance	Excellent (zero JS)	Good (requires optimization)
Content-only pages	Native strength	Works but adds overhead
Interactive features	Islands (selective)	React-native (full)
Developer talent pool	Growing, still niche	Largest in frontend
Hosting cost	Near zero (static CDN)	Can scale with Vercel
Framework lock-in	Low (multi-framework)	React ecosystem

Choose Astro when: The site is primarily content — landing pages, service pages, blog, maybe a simple contact form. You want the best possible performance baseline without optimization effort. The team building it has flexibility in framework choice. The site will be hosted on a CDN and handed off to a client or another team after launch.

Choose Next.js when: The marketing site is the front door of an application, and the same codebase will eventually serve authenticated users, dynamic dashboards, or complex interactive features. The development team is already deep in the React/Next.js ecosystem and context-switching to Astro adds more cost than the performance benefit saves. You need server-side rendering for personalized content or A/B testing at the infrastructure level.

For a pure marketing site with no near-term product plans — Astro is the cleaner choice. Less JavaScript, lower hosting cost, easier portability. The performance advantage is structural, not earned through optimization.

The Marketing Team Question

This is the conversation most framework comparisons skip, and it’s the one that matters most for most businesses.

Neither Astro nor Next.js gives non-developer content editors a UI. A marketing manager who needs to update a headline, add a case study, or publish a blog post cannot do that without either writing code or having a developer do it. That’s not an Astro problem or a Next.js problem — it’s a JavaScript framework problem.

Both need a headless CMS to solve it. Contentful, Sanity, Prismic, or similar — these are separate products with their own pricing, learning curves, and integration maintenance requirements. The “fast, modern framework” often comes with a services stack of three to five tools to replicate what WordPress gives you out of the box.

This is worth quantifying. A typical headless setup — framework, CMS, hosting, media CDN — involves ongoing subscription costs, multiple vendor relationships, and technical debt that compounds when any piece of the stack has a breaking update. A custom WordPress build with a properly configured deployment pipeline covers most of the same use cases with significantly lower operational complexity for businesses without in-house development teams.

The question is not just “which framework performs better.” It’s “who updates this site, how often, and what happens when the developer who built it isn’t available?” Performance scores don’t survive a site that stops being maintained.

The Real Verdict

For a pure marketing site where a developer controls all content updates and performance is the primary concern — Astro is the right call. The numbers are better by default, hosting is simpler, and the framework isn’t fighting its own complexity.

For a project that starts as a marketing site and has a reasonable probability of evolving into a product with authenticated features and real-time functionality — Next.js is the safer long-term investment. Migrating from Astro to Next.js later is possible but expensive.

For most small and mid-sized businesses that need a marketing site updated regularly by non-developers, with a content strategy that requires publishing frequency and SEO investment over time — a well-built WordPress site still wins. Not because WordPress is technically superior to either framework. Because the total cost of ownership, including content operations, is lower than a headless stack across a three-to-five year horizon.

The right framework is the one that fits the team maintaining it, not the one with the best benchmark on a comparison blog.