In the 2025 web framework landscape, Astro has established itself as the smartest choice for anyone wanting to build fast, accessible and long-lasting websites. This isn't hyperbole — the numbers speak for themselves.
The problem with modern frameworks
React, Vue, Angular — all great tools for complex web applications. But when it comes to company websites, blogs, portfolios or landing pages, these frameworks bring unnecessary weight: hundreds of kilobytes of JavaScript the browser must download, parse and execute before the page becomes interactive.
The result? Slow sites, poor Core Web Vitals scores and a negative impact on SEO. Google is explicit: speed is a ranking factor.
Astro and the Islands architecture
Astro solves this problem at the root with a radically different approach: ship zero JavaScript by default. Every component is rendered server-side and sent to the browser as pure HTML. No bundle, no hydration, no overhead.
The real magic is the Islands architecture: you can isolate interactive components (carousels, forms, menus) and load JavaScript only for them, only when needed. The rest of the page remains static HTML.
How it works in practice
- client:load — loads and hydrates the component immediately
- client:idle — loads when the browser is idle
- client:visible — loads only when the component enters the viewport
- client:media — loads only on certain breakpoints
Real numbers
In our Astro projects, we consistently measure PageSpeed scores between 95 and 100 on mobile — the hardest segment. With Next.js or Gatsby on the same content, we rarely exceed 80-85 without aggressive optimisation.
The Arco Milano site, built in Astro, achieved 100/100 on PageSpeed on both desktop and mobile at first launch, without any post-build optimisation.
When to use Astro (and when not to)
Astro is the ideal choice for: company sites, blogs, portfolios, landing pages, e-commerce sites with static catalogues, documentation. It is not the right choice for: complex web applications with global state, real-time dashboards, SaaS products with intensive client-side logic.
Conclusion
If you're building a website in 2025 and don't need a SPA, Astro is the most rational choice. Excellent out-of-the-box performance, modern DX, support for React/Vue/Svelte, and a rapidly growing ecosystem. At 3bit we use it as our default stack for all company websites.