Svelte & Astro Development
Svelte and Astro Development for Ultra-Fast Websites
Lightweight SvelteKit applications and content-first Astro sites that ship almost no JavaScript and score highly on Core Web Vitals.
Svelte and Astro: Send Less JavaScript, Load Far Faster
Most sites ship far more JavaScript than they need, and mobile visitors pay for it in battery and waiting time. Svelte compiles components to small, direct DOM updates instead of shipping a runtime, and Astro renders pages to HTML and hydrates only the interactive parts — its "islands" model. Both approaches attack the same problem from different ends.
Astro is our recommendation for content-led sites: marketing pages, documentation, publishers and blogs where almost everything is static and a handful of widgets need interactivity. SvelteKit suits applications — dashboards, tools and portals — where you want a full framework with routing, server endpoints and form actions but a much smaller footprint than the alternatives.
Both render on the server, so pages arrive as complete HTML with correct headings, metadata and structured data. That is what makes them so effective for sites where organic traffic is the main channel.
What’s Included
What We Build with Svelte and Astro
Astro Content Sites
Marketing sites, documentation and publications assembled from Markdown or a headless CMS, shipped as near-static HTML.
SvelteKit Applications
Full applications with routing, server endpoints, form actions and streaming — with a fraction of the bundle size.
Interactive Islands
Calculators, configurators, search and filters hydrated individually, leaving the rest of the page as plain HTML.
Core Web Vitals Engineering
Image handling, font strategy, prefetching and caching tuned until the field data actually passes.
Headless CMS Integration
Content pulled from WordPress, Sanity, Strapi or Contentful with previews and scheduled publishing.
Migration from Heavy Stacks
Moving bloated WordPress or SPA sites onto Astro with URLs, metadata and redirects preserved.
Benefits
Why Svelte or Astro?
- Dramatically smaller JavaScript payloads, which mobile visitors feel immediately.
- Server-rendered HTML by default — ideal for search visibility.
- Simple, readable component code with less boilerplate than larger frameworks.
- Astro can mix React, Vue and Svelte components, so existing work is not wasted.
- Lower hosting cost: most pages can be served statically from a CDN.
Technologies Used for Svelte & Astro Development
We recommend the right tools for your goals, budget and team — never a one-size-fits-all stack.
Discuss Your ProjectHow We Work
Our Svelte & Astro Development Process
Discovery & Consultation
We learn about your business, audience and goals, review any existing website and agree on clear success criteria.
Strategy & Planning
We define the sitemap, features, technology stack and timeline, so scope and budget are clear before work begins.
UI/UX Design
We design wireframes and polished, responsive layouts for your approval, focused on usability and conversions.
Development
We build with clean, standards-based code, integrate your tools and set up an easy-to-use content editor.
Testing & QA
We test functionality, speed, security, accessibility and SEO across browsers and devices before launch.
Launch & Support
We deploy, monitor and fine-tune your site, then provide ongoing maintenance and support as you grow.
FAQ
Svelte & Astro Development FAQs
Is Svelte mature enough for production?
Yes. Svelte and SvelteKit are stable, widely used in production and backed by an active team. The main practical consideration is hiring: the talent pool is smaller than React, so we make sure the code and documentation we hand over are easy for any JavaScript developer to follow.
When would you recommend Astro over Next.js?
When the site is mostly content and only a few parts are interactive. Astro ships less JavaScript and is simpler to reason about. If the project is genuinely an application, Next.js or SvelteKit is the better fit.
Can Astro use React components we already have?
Yes. Astro supports React, Vue, Svelte and Preact components on the same page, so you can reuse existing work while new pages stay lightweight.
Will moving to Astro affect our search rankings?
Handled properly it usually helps, because pages get faster and cleaner. We keep URLs identical where possible, carry over metadata and structured data, add 301s where they must change and monitor Search Console afterwards.
Explore More
More Frameworks & Languages Services
Technologies and services that work well alongside svelte & astro development.
React Development
Custom React.js front ends, dashboards and single-page applications built with TypeScript, reusable components and server-side rendering for SEO.
Next.js Development
Next.js websites and web apps with server-side rendering, static generation, image optimisation and route-level code splitting for top Core Web Vitals.
Vue.js & Nuxt Development
Vue 3 applications and server-rendered Nuxt websites — Composition API, Pinia state, TypeScript and fast, SEO-ready pages.
Angular Development
Angular applications for large teams — typed architecture, RxJS data flows, standalone components, testing and long-term upgrade support.
Case Studies & Live Demos
Svelte & Astro Development in Practice
Projects where this work made a measurable difference — the problem, what we built and the results. Each one has a working demo you can try.
- Astro
- Svelte
- TypeScript
Publishing Website
Food Magazine & Recipe Archive
An Astro rebuild of a 3,850-recipe archive that cut JavaScript by two thirds and made mobile pages load in about a second.
- Angular
- TypeScript
- RxJS
Enterprise Web Application
Insurance Claims Administration Portal
An Angular portal that gave 200 claims handlers one screen in place of three legacy systems.
- Next.js
- React
- Headless CMS
Headless CMS Website
Estate Agency Property Listings
A headless CMS and Next.js site rendering 1,240 live listings that sync from the agency system every few minutes.
- React
- TypeScript
- Node.js
Web Application Development
Freight Dispatch & Driver Tracking Platform
A live dispatch board built in React and Node.js that replaced a spreadsheet-and-phone workflow for 120 drivers.
- Next.js
- React
- TypeScript
Headless CMS Website
Wealth Management Insights Hub
A Next.js front end over headless WordPress that took a compliance-heavy content library from slow to near-instant.
- Vue 3
- Nuxt
- TypeScript
Booking Platform Development
Adventure Tour Booking & Itinerary Platform
A Vue 3 and Nuxt platform handling departures, seat availability, deposits and guide assignments for multi-day tours.
From the Blog
Guides and Comparisons Worth Reading
Straight answers on when this technology is the right choice, what it costs and how to get the most from it.
Astro and Svelte: Shipping Less JavaScript on Purpose
Most sites send far more JavaScript than they need. Astro sends almost none by default, and Svelte compiles the framework away. Both make pages measurably faster.
Running a Large Recipe Archive: Search, Structured Data, Ads and Editorial Workflow
A recipe archive with thousands of pages is a publishing business and a database at the same time. Here is how we structure recipes, keep search and browsing fast, balance advertising against page speed and set up an editorial workflow that copes with the back catalogue.
Angular for Large Applications: When Structure Beats Flexibility
Angular makes more decisions for you than any other major framework. On a big, long-lived application maintained by a rotating team, that is the feature.
Svelte & Astro Development Enquiry
Tell Us About Your Svelte or Astro Project
Tell us how content-heavy the site is and where the content lives, so we can recommend Astro, SvelteKit or something else entirely.
- Reply within 24 hoursA real person reviews every request.
- Free consultationHonest advice, no obligation.
- 100% confidentialHappy to sign an NDA.
- We review your requirements
- We reply with questions or a call slot
- You receive a clear, itemised proposal