Astro websites built for speed, flexibility, and growth.
We design and build high-performance marketing sites your team can update without relying on developers for every change.
Most marketing sites eventually slow teams down. They become hard to update, difficult to scale, and too dependent on technical help for simple changes.
Bits&Letters builds Astro websites for teams that need a faster, cleaner way to operate. Astro delivers excellent performance, strong SEO foundations, and the flexibility to add interactivity only where it matters. Paired with a CMS like Sanity, your site becomes easier to manage, easier to evolve, and easier for your team to own.
We bring strategy, design, and engineering together from the start, so your site is structured around your message, your content workflows, and the business outcomes it needs to support.
Trusted by teams building serious digital experiences
In your free consultation
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See what's slowing your site down
We'll help identify any performance, CMS, content, and technical issues creating friction for your users.
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Find out whether Astro is the right fit
Astro is ideal for fast, content-driven marketing sites, and can stretch to support forms and even lightweight full-stack features. We'll help you determine whether Astro fits your goals.
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Get a clear migration path
If you are moving from WordPress, Webflow, or another platform, we can show you what a transition would involve.
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Give your marketing team more control
A modern Astro and Sanity setup makes content updates faster, cleaner, and less dependent on developers.
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Talk directly with the people doing the work
Every client gets a dedicated Slack channel and Notion workspace, with direct access to the strategists, designers, and engineers shaping your site.
We deliver solutions to your gnarliest web problems.
Astro marketing websites
Fast, scalable sites built for performance, SEO, accessibility, and long-term maintainability.
Website redesigns
Messaging, structure, design, content, CMS, and front-end execution brought together in one clean system.
CMS strategy and Sanity implementation
Flexible CMS setups designed around how your team actually works.
WordPress and Webflow migrations
Content audits, migration planning, scripts, and Astro rebuilds that protect SEO and momentum.
Performance, SEO, and accessibility improvements
Technical improvements that make your site faster, easier to find, and easier to use.
Post-launch support
Documentation and support so your team can manage the site confidently after launch.
Featured projects
View all projectsReal-time data billboards made Stripe City feel alive
We built the backend for Stripe's viral Black Friday campaign — live data, clever animation, and enterprise-grade reliability.
A crisp website redesign kicks off a new chapter for Copytree
A new site built for years of intentional growth, with near-perfect Core Web Vitals and a CMS the team actually uses.
What's so great about Astro?
Speed that converts
By default, Astro outputs your site as static HTML files ready to send directly to users from a web server or CDN, eliminating latency from database queries or API calls. Your visitors see content sooner, which improves conversion rates, SEO rankings, and Core Web Vitals scores.
JavaScript only when you need it
Unlike other frameworks that require huge JavaScript payloads just to render a web page, Astro sends plain HTML by default. For when your users need interactivity, Astro's "islands" architecture allows devs to load JS only as needed, for optimal performance.
Full-stack capable
Astro has a full suite of server-side APIs — individual pages or your whole site can handle requests or render pages on the server, just like full-stack frameworks. Astro sites can easily integrate with other services (like CMSes or CRMs) and deliver app-like experiences to your users.
Open source, no lock-in
The Astro framework is open source and free to use under the MIT license, with an HTML-like component syntax and plain old TypeScript code tying everything together. Astro sites are easy to edit, maintain, and deploy to any major hosting provider.
Astro × AI
With simple HTML-like syntax and a built-in Markdown content layer, Astro is super friendly to both human developers and AI agents.
Paired with a headless CMS like Sanity — which has excellent MCP support — your site becomes editable by your whole team, not just your devs. Marketers, engineers, and AI agents can all work directly in the CMS, or indirectly using Claude, Codex, or Sanity's own Content Agent.
We hand off every site with training and documentation, so your team is running independently from day one.
Frequently asked questions about Astro
What is Astro?
An open-source web framework for content-driven sites. It renders pages on the server and ships minimal JavaScript, making sites significantly faster than React or Next.js applications. Excellent for marketing sites where speed and SEO matter most.
How much does an Astro website cost?
$25K-$65K depending on complexity, page types, CMS requirements, and integrations. We scope every project individually after a discovery conversation.
How long does it take?
12-24 weeks from kickoff to launch. We aim for working prototypes in-browser within the first few weeks.
Can you migrate from WordPress or Webflow?
Yes. We audit existing content, design a new content model, write migration scripts, and build the new front-end. We typically pair Astro with Sanity as the CMS.
What CMS works best with Astro?
We most often pair Astro with Sanity for its real-time collaboration and structured content. Astro also works with Storyblok, Contentful, and Git-based systems like Tina and Keystatic.
Is Astro good for SEO?
Excellent. Server-rendered HTML means search engines see fully formed pages without waiting for JavaScript. Astro sites consistently achieve strong Core Web Vitals scores.
Do I need React?
No. Astro has its own component syntax close to standard HTML. It supports React, Vue, and Svelte for interactive features, but most marketing content doesn't need them.
What happens after launch?
30 days of post-launch support included. Ongoing retainers available starting at $5K/month. We also document everything so your team or another developer can maintain the site independently.
