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Welcome to Astro!

Astro is a new kind of static site builder that delivers lightning-fast performance with a modern developer experience. Astro borrowed the best parts of our favorite tools and then added a few innovations, including:

🚀 Bring Your Own Framework (BYOF): Build your site using React, Svelte, Vue, Preact, web components, or just plain ol’ HTML + JavaScript.
🚀 100% Static HTML, No JS: Astro renders your entire page to static HTML, removing all JavaScript from your final build by default.
🚀 On-Demand Components: Need some JS? Astro can automatically hydrate interactive components when they become visible on the page. If the user never sees it, they never load it.
🚀 Fully-Featured: Astro supports TypeScript, Scoped CSS, CSS Modules, Sass, Tailwind, Markdown, MDX, and any of your favorite npm packages.
🚀 SEO Enabled: Automatic sitemaps, RSS feeds, pagination and collections take the pain out of SEO and syndication.

How it works

Astro works a lot like a static site generator. If you have ever used Eleventy, Hugo, or Jekyll (or even a server-side web framework like Rails, Laravel, or Django) then you should feel right at home with Astro.

In Astro, you compose your website using UI components from your favorite JavaScript web framework (React, Svelte, Vue, etc). Astro renders your entire site to static HTML during the build. The result is a fully static website with all JavaScript removed from the final page. No monolithic JavaScript application required, just static HTML that loads as fast as possible in the browser regardless of how many UI components you used to generate it.

Of course, sometimes client-side JavaScript is inevitable. Image carousels, shopping carts, and auto-complete search bars are just a few examples of things that require some JavaScript to run in the browser. This is where Astro really shines: When a component needs some JavaScript, Astro only loads that one component (and any dependencies). The rest of your site continues to exist as static, lightweight HTML.

In other full-stack web frameworks this level of per-component optimization would be impossible without loading the entire page in JavaScript, delaying interactivity. In Astro, this kind of partial hydration is built into the tool itself.

You can even automatically defer components to only load once they become visible on the page with the :visible modifier.

This new approach to web architecture is called islands architecture. We didn’t coin the term, but Astro may have perfected the technique. We are confident that an HTML-first, JavaScript-only-as-needed approach is the best solution for the majority of content-based websites.

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Atul Bhatt

Sep 6

How We Achieved a 99 PageSpeed Score: A Real-World Web Performance Case Study

#webperf #corewebvitals #lighthouse #astro

7 min read

Oct 9

Make missing translations fail your Astro build

#astro #i18n #typescript #webdev

5 min read

Oct 9

Que tu build de Astro falle si falta una traducción

#astro #i18n #typescript #español

5 min read

Ray

Oct 8

Building a 100% Client-Side Invoice & Thermal Receipt Generator with Astro and Canvas

#showdev #webdev #javascript #astro

1 min read

Maxim Gerasimov

Oct 8

Choosing Between 11ty and Astro for Rebuilding a Static Website with Light Interactive Components

#ssg #astro #11ty #performance

7 min read

Roger Rajaratnam

Sep 4

Web analytics on a static Astro blog

#astro #engineering #analytics

6 min read

Sep 4

Why I Built a 100% In-Browser YAML ↔ JSON Converter (Stop Uploading Configs to Random Servers)

#webdev #javascript #devops #astro

2 min read

Никита Кривда

Sep 17

Cloudflare Web Analytics on Pages: three months of zero page views, and the toggle that was actually off

#cloudflare #webdev #analytics #astro

2 min read

a353551071

Sep 3

I built a patch-watch routine so my game wiki stops lying after every update

#showdev #astro #webdev #gamedev

4 min read

Oct 7

Building an in-browser Excel formula grader with Univer and Astro

#frontend #javascript #webdev #astro

3 min read

Ishan Naik

Oct 7

Building a Hyperlocal Rain Nowcaster on a $0 Stack: Benchmarking Open-Meteo Against Airport Radar

#python #astro #weather #opensource

9 min read

Christian Gonzales Komiya

Oct 6

[Spanish] Un sitio de 1000 páginas sin servidor ni base de datos: Astro + Claude Code

#astro #claude #webdev

5 min read

Multita

Sep 1

Valor de la UF en septiembre de 2026: subió a $2.281, y cómo evitamos que el dato quede viejo

#webdev #architecture #astro #spanish

8 min read

Fedora

Sep 5

How I Built a Lightning-Fast Eastern Astrology & BaZi Engine with Astro

#showdev #astro #webdev #javascript

2 min read

56kode

Aug 31

I Redesigned My Blog With Claude Design and Claude Code in Less Than a Day

#ai #claude #design #astro

3 min read

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