Websites
We build the content model, CMS, components and integrations behind your site, so your team can ship as fast as your users need.
As your product and market grow, your website has to keep up: new pricing, a page for every new use case or audience segment, comparisons against the competitors buyers are weighing. Page builders like Webflow are great when you're starting out, but they keep content tangled up in each page's design, so updates mean copying the same text to dozens of pages and hoping nothing breaks. And if you want a pricing calculator, or to hand a new page to Claude Code, there's no codebase to work in.
Content-driven marketing websites built with Astro. Front-end, CMS, hosting, and integrations handled as one system by a single experienced partner.
Website design built on your brand and a component system your team can keep using after launch, in the CMS or with AI tools like Claude Code.
Design systems that connect brand design to web implementation. Components, patterns, and documentation so your team can produce pages without starting from scratch.
Rill
Rill's marketing team had outgrown Webflow just as their CMO needed a new pricing page, onboarding changes and a visual refresh. We rebuilt the site on Astro and Sanity with a component-based page builder and pricing modeled as structured data, and Rill's team now publishes on their own, in Sanity Studio or with Claude Code working directly in the codebase.
Everself
A lush, video-rich new brand experience delivered in just 8 weeks, with near perfect Lighthouse & Core Web Vitals scores
Oso
A component system inside Oso’s Webflow site that let developer marketing build use case, customer and campaign pages from reusable parts.
Selected clients
We start by talking with your team and auditing your current site: pages, content, forms, integrations and what's actually getting traffic. You get a plan with clear priorities and acceptance criteria.
We design your site's components and the content model behind them together, so pricing, features and customer stories become structured data your team can reuse across pages.
We build the Sanity Studio and Astro frontend in stages, so you can review real pages early and adjust before launch.
We move your content, map redirects to protect search rankings, and train your editors in the Studio. After launch, we can stay on for support or hand the site to your team.
We start with a conversation about where you are and what you're trying to do.
You bring your goals, your constraints and the people who know the work best.
From there, we either build a first version your team takes over, or stay on as part of your team on a monthly retainer.
Either way, you own the result: code, content and accounts.
An audit of your site, content and traffic, and a plan with clear priorities.
Reusable components and patterns that keep every new page consistent.
Page and layout design built on your brand and design system.
Structuring pricing, features and stories as data you can reuse.
A Sanity Studio set up around how your team edits and publishes. → Sanity CMS development
Fast, maintainable Astro sites built from your design system. → Astro web development
Moving your content, redirects and metadata into the new system.
Docs, videos and workshops so editors and developers can work on their own.
Ongoing updates, fixes and new pages after launch.
Bits&Letters is a founder-led web & product consultancy based in the New York City area. We plan, design, and build websites and apps for startups and mid-size businesses across a range of industries, especially B2B tech, healthcare, and fintech.
Our founder David Demaree helped build UI tools and infrastructure, including Adobe Fonts, Material Design, and Webflow.
Now, at Bits&Letters, David works with clients to set up better systems, so you can deliver web experiences that are secure, fresh, and engaging for your users, without anyone having to spend all day worrying about the website.
We start with your content: what you publish, who publishes it and how it’s structured. Astro and Sanity are our usual pick for marketing sites, but those answers sometimes point elsewhere. Copytree runs on Next.js and Sanity, partly because its team was moving from a drag-and-drop builder to form-based editing and wanted live previews while writing. Peabody Fine Architects stayed on WordPress, with a new custom theme and far fewer plugins. For Stripe City’s live billboards, we picked SvelteKit to keep memory use and JavaScript small on screens and PCs whose specs weren’t settled until late.
Yes, if Webflow otherwise suits your team. Oso wanted to stay on Webflow, so we recommended restructuring its key pages around Webflow’s components and Build mode, where most people can change content without full design control. We turned one landing page’s layout into reusable components and built the first use case pages from them, so Oso’s marketers could make the next pages from the same parts in Build mode.
Usually, though we don’t promise a score. Astro renders pages on the server and ships very little JavaScript, so a visitor’s browser has less to download and run. Speed wasn’t an explicit goal for Rill’s migration, and the homepage’s desktop Lighthouse score still went from 68 on Webflow to 97 on Astro.
Yes. You own the code, and it lives in a Git repository your developers and their AI tools can work in like any other codebase. Rill’s engineers set up the Cloudflare page rules that let the new site launch alongside the old Webflow site, and since launch, Rill’s team has moved the remaining pages over on its own, with almost no involvement from us.
You get a shared Slack channel, so you talk directly with the people doing the work, and we review pages in progress with you on a regular schedule. Rill’s project ran on weekly check-ins. Everself’s team and its design agency, Landscape, met with us twice a week to preview pages and components. For Oso, we held regular syncs with its developer marketers, with briefs in Notion and tasks tracked in Linear.
Your scrappy starter site got you this far—but now that you're growing, it's probably holding you back more than helping you move forward.
It’s less about the tooling and more about who needs to change which parts of your website at which speeds.
We’ll help you find the way forward.
