If you’re having a new website built in 2026, you’ll eventually face a question: What technology powers it? For most Swiss SMEs, this isn’t something that keeps them up at night — and that’s understandable. But the choice of framework has direct consequences for your loading times, your Google ranking, your ongoing costs, and how well AI assistants like ChatGPT understand your website.
Two frameworks dominate professional web development today: Astro.js and Next.js. Both are modern, both are powerful — but they follow fundamentally different philosophies. In this article, we compare both approaches honestly and help you make the right decision for your business.
What is Astro.js?
Astro.js is a relatively young framework that first appeared in 2021 and has since gained popularity rapidly. Its core idea is radically simple: Send as little JavaScript to the browser as possible.
For a typical business website — with a homepage, about page, services, blog, and contact page — the visitor essentially needs no JavaScript. The pages are static, the content doesn’t change in real time. Astro recognizes this and delivers pure HTML and CSS. The result: pages that load in under one second.
Where interactive elements are needed — a contact form, a pricing calculator, a cookie banner — Astro can embed small JavaScript islands. Everything else stays lean and fast.
What is Next.js?
Next.js was developed by Vercel in 2016 and is today one of the most widely used React frameworks worldwide. It’s the Swiss army knife of web development: you can build almost anything with it, from a simple landing page to a complex web application like a dashboard, an online shop, or a booking platform.
Next.js is based on React and ships a complete JavaScript runtime by default. This makes it extremely flexible — but also heavier. Every page contains React code that must be loaded, parsed, and executed before the user sees the page.
The Head-to-Head Comparison
Loading Speed and Performance
This is where the biggest difference shows. Measured with Google Lighthouse (the standard tool for website performance), the comparison for a typical SME website looks like this:
| Metric | Astro.js | Next.js |
|---|---|---|
| Lighthouse Performance Score | 95–100 | 70–90 |
| First Contentful Paint | 0.4–0.8s | 1.0–2.5s |
| Time to Interactive | 0.5–1.0s | 1.5–3.5s |
| JavaScript Size (typical) | 0–15 KB | 80–250 KB |
| Largest Contentful Paint | under 1.5s | 1.5–4.0s |
Why does this matter? Google introduced Core Web Vitals as a ranking factor in 2021. Slow pages are penalized in search results. And studies consistently show: every additional second of loading time costs you 7–10% of potential conversions. For a Swiss SME with CHF 50,000 in monthly online revenue, that can quickly amount to CHF 3,500 to CHF 5,000 per month.
Hosting Costs
Astro websites are essentially static HTML files. They can run on practically any hosting — including affordable static hosting services like Vercel, Netlify, or Cloudflare Pages, often even for free or for just a few francs per month.
Next.js requires a server (Node.js runtime) in many configurations. That means:
- Higher hosting costs (CHF 20–100/month for a basic server)
- More maintenance effort
- More complex deployment pipelines
| Cost Factor | Astro.js | Next.js |
|---|---|---|
| Hosting (typical) | CHF 0–20/month | CHF 20–100/month |
| Maintenance Effort | Low | Medium to high |
| Build Times | 5–15 seconds | 30–120 seconds |
SEO and AI Visibility
Both frameworks can deliver technically flawless SEO. But Astro has a structural advantage: because pages are delivered as pure HTML, search engines and AI crawlers can read the content immediately — without having to execute JavaScript.
With Next.js, it depends on the configuration. With Server-Side Rendering (SSR), SEO is also excellent. But with Client-Side Rendering (CSR), crawlers may miss content that only appears after JavaScript loads.
For AI visibility — the question of whether ChatGPT, Perplexity, and other AI assistants recommend your business — clean, fast-loading HTML is a clear advantage. AI crawlers are even less tolerant of JavaScript-heavy pages than Google.
Flexibility and Feature Set
This is where Next.js scores. If you need a complex web application — with user login, real-time data, a dashboard, an API — Next.js is the better choice. It offers:
- Built-in API routes
- Server-Side Rendering for dynamic content
- Middleware for authentication
- The React ecosystem with thousands of libraries
Astro is deliberately optimized for content websites. That means: business websites, blogs, portfolios, documentation, landing pages. For these use cases, it’s superior — but it’s not designed for full-fledged web apps.
Developer Friendliness
Astro allows developers to write components in various frameworks — React, Vue, Svelte, or even plain HTML. This makes it easier to reuse existing components and deploy developers with different backgrounds.
Next.js is firmly tied to React. If your agency has React developers, that’s no problem. But it limits flexibility in team composition.
When is Astro.js the Right Choice?
Astro is ideal for your project if:
- You’re building a business website (homepage, services, about, contact)
- You’re running a blog or magazine
- Loading speed and performance are top priority
- You want to be found by Google and AI assistants
- You want to minimize hosting costs
- Your website primarily presents content (rather than interactive applications)
When is Next.js the Right Choice?
Next.js is ideal when:
- You’re building a web application (dashboard, portal, booking system)
- Your website needs user logins and personalized content
- You need to display real-time data
- Your development team already has React experience
- You’re building an API that’s tightly coupled with the frontend
What Do We Recommend at 0gravity?
We work with Astro.js — and with full conviction. The reason: 95% of our clients need a website that builds trust, attracts customers, and gets found in search engines and AI assistants. For that, Astro is simply the better tool.
Our results speak for themselves: Lighthouse scores of 95–100, loading times under one second, and hosting costs that are a fraction of server-based solutions. These aren’t abstract numbers — they mean more customers, lower bounce rates, and lower operating costs for our clients.
If a client genuinely needs a full-fledged web application, we recommend Next.js or a combination of both. But for the vast majority of Swiss SMEs, Astro is the clear first choice.
Interested? Learn more about our services or take a look at our pricing.
The Combination: The Best of Both Worlds
What many don’t know: you don’t necessarily have to choose one. A common architecture is:
- Astro for the public website (homepage, blog, services) — for maximum performance and SEO
- Next.js for the internal area (client portal, dashboard) — for maximum functionality
This microservices architecture is often the smartest approach for larger projects. The public website loads blazingly fast, and the feature-rich area sits on its own domain or subdomain.
Conclusion: The Technology Must Match the Goal
The question isn’t “What’s better?” but rather “What fits my project?” For the vast majority of Swiss SMEs — from tradespeople to medical practices to consulting firms — a blazing-fast, SEO-optimized content website is what they need. And for that, Astro.js is the top choice in 2026.
If you’re unsure which framework is right for your project, talk to us. We’ll advise you honestly — even if that means Astro isn’t the right solution for you.
Frequently Asked Questions (FAQ)
Is Astro.js harder to maintain than Next.js?
No, quite the opposite. Astro websites are typically easier to maintain because they have fewer moving parts. No server maintenance, no database updates, no runtime dependencies. A content update is often as simple as editing a Markdown file.
Can I switch from Astro to Next.js later?
Yes, but it involves effort. That’s why making the right choice at the start is important. In practice, however, we rarely see a SME website suddenly needing to become a full-fledged web app. Usually, requirements grow incrementally, and Astro grows with them.
Is Astro.js just a trend or is it here to stay?
Astro has been continuously evolving since 2021 and has an active, growing community. It’s used by major companies like Google, Microsoft, and Netlify. This isn’t a short-lived hype but a fundamental shift towards faster, leaner websites.
My current website uses WordPress. Is Astro a sensible replacement?
For most SMEs: yes. Astro delivers significantly better performance, higher security (no PHP, no database attack surface), and lower maintenance costs. The only trade-off: content changes happen through a headless CMS or directly via files instead of the familiar WordPress backend. More on this in our article about Headless CMS.
What does an Astro website cost compared to Next.js?
Development costs are comparable. The difference lies in ongoing costs: Astro websites are cheaper to host and easier to maintain. Over 3 years, that can quickly add up to CHF 2,000–5,000. Details can be found in our website cost comparison for Switzerland.