Why we use Astro.js for marketing sites (and what the results look like)

At Lucky Media, we build the majority of our marketing sites on Astro.js. We switched from Next.js as our default for content-heavy work several years ago, and the results have been consistent enough that we now recommend Astro to almost every client who needs a marketing site, company homepage, or content platform. Here is why, with real numbers to back it up.

Why performance matters more than ever for marketing sites

Core Web Vitals have been Google ranking signals since 2021. The data is unambiguous: faster sites rank better, convert better, and retain visitors longer. A one-second delay in page load time reduces conversions by up to 7%. For a marketing site whose job is to generate leads, slow is expensive.

Most marketing sites do not need to be slow. They are mostly static content, a homepage, service pages, case studies, a blog. The only reason they end up slow is when the framework treating them like a full application, shipping React hydration overhead for pages that never needed it.

What Astro.js does differently

Astro.js is built on one principle: ship zero JavaScript by default. Most frameworks send a JavaScript runtime and application bundle to the browser with every page load, even for pages that are entirely static content. Astro does not. It generates pure HTML at build time and only loads JavaScript for components that explicitly need it - what Astro calls Islands Architecture.

In practice, this means your homepage loads as fast as a plain HTML file. Your blog posts have no JavaScript overhead. Your service pages are fully server-rendered HTML that search engines can crawl and index instantly. The interactive parts of the page: a contact form, a pricing toggle, an animated section, load their JavaScript independently without blocking anything else.

Real results from our client work

The performance gains are not theoretical. Here is what we see after migrations:

Yarn, the open-source package manager used by millions of developers, migrated from Docusaurus to Astro.js. The result was measurably improved performance scores and a significantly better developer experience.The Astro codebase is simpler to maintain and extend than their previous setup.

flow.digital is a boutique NYC agency helping businesses cut through sales and marketing inefficiency with smarter automation. After migrating their marketing site from Webflow to Astro.js with Sanity as CMS, they achieved 90+ PageSpeed scores across all pages. More importantly, their content team gained the ability to launch new pages faster than before, moving from a process that required engineering involvement to one where marketers publish independently.

Across our client work, a pattern emerges: Astro sites consistently score 90+ on all four Lighthouse categories without the optimization work that equivalent Next.js or WordPress sites require. The framework earns those scores by default.

Astro.js and SEO

Astro is excellent for SEO. The reasons follow directly from its architecture. Every page is fully server-rendered HTML, search engine crawlers see the complete content immediately, with no JavaScript execution required. There is no rendering gap, no risk of content being missed because a crawler timed out waiting for JavaScript.

The Core Web Vitals profile (strong LCP, minimal CLS, low INP) aligns directly with Google's ranking signals. Schema markup and meta tags are managed in static Astro components that generate clean, consistent HTML on every build. The SEO case for Astro is strong by default, before any additional optimization.

Astro.js and marketing team autonomy

Performance is only half the reason we recommend Astro. The other half is what it enables for marketing teams. We pair every Astro site with a headless CMS, typically Statamic for teams who want a self-hosted, Laravel-based solution, or Contentful for enterprise teams with large content operations. Some clients prefer the headless solution offered by Sanity CMS.

The result is a marketing team that can publish new pages, update content, and run campaigns without filing engineering tickets. The site stays fast because the CMS only handles content, the frontend is built in Astro and deployed statically. Marketers get a modern editing experience. Engineers get a clean, maintainable codebase. Both sides win.

When Astro.js is the right choice

Astro is the right framework for your marketing site if any of these are true:

• Your current site is slow and you are tired of optimizing around a framework that was not built for content

• Your marketing team is blocked by engineering for every content update

• You are migrating from Webflow, WordPress, or a legacy CMS and want to start clean

• SEO is a primary growth channel and you need strong Core Web Vitals without manual tuning

• Your site is primarily content: homepage, services, blog, case studies, landing pages

Astro is not the right choice for SaaS dashboards, authenticated applications, or anything where most pages require real-time user-specific data. For those, we use Next.js.

Build your marketing site on Astro.js

We are an Official Astro Partner. Every marketing site we build on Astro ships with 90+ PageSpeed, clean structured data, automatic sitemaps, and a headless CMS setup your team can manage without engineering support. We are an Official Astro Partner.

Lucky Media is proud to be recognized as a leading Astro development agency.

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