Svelte development for lightweight, high-performance interfaces
Svelte is a frontend framework that does most of its work at build time, compiling components into small, efficient JavaScript. With SvelteKit it also handles routing and server rendering, making it a good option when performance and simplicity are priorities.
Svelte components are concise and easy to read, and the resulting pages tend to ship less JavaScript than equivalent React or Angular code, which helps on mobile networks and older devices. The trade-off is a smaller ecosystem and talent pool, so some integrations need more custom work and hiring can take longer. For a large organisation standardising on one framework across many teams, React or Angular is usually the safer long-term choice.
What we build with Svelte
- Performance-sensitive public websites
- Embeddable widgets
- Interactive data visualisations
- Lightweight web applications
- Prototypes and internal tools
Svelte questions
What is SvelteKit?
SvelteKit is the official application framework for Svelte, adding routing, server-side rendering and server endpoints, much as Next.js does for React.
Is Svelte ready for production use?
Yes. It is stable and used in production by many organisations. The main consideration is the smaller ecosystem, not the framework itself.
Why are Svelte applications so small?
Svelte compiles components into plain JavaScript at build time instead of shipping a framework runtime to the browser. Less code to download and execute means faster loading, particularly on slower phones and networks.
When should we choose Svelte over React?
Svelte suits projects where performance and simplicity matter most, such as content sites, embedded widgets and interfaces used on low-powered devices. React may be preferable when you need its larger ecosystem or a very large hiring pool.
Is Svelte good for SEO?
Used with SvelteKit, pages can be server-rendered or prerendered as HTML, which is ideal for search engines. Fast load times also help with Core Web Vitals.
Can Svelte components be embedded in an existing site?
Yes. Because Svelte compiles to small standalone JavaScript, individual components can be embedded into existing pages or third-party sites with very little overhead.
How is state managed in Svelte?
Svelte has reactivity built into the language and includes simple stores for shared state, so most applications need no extra state library. This keeps code short and easy to follow.
How do you test Svelte applications?
We write component tests and end-to-end tests for key journeys, and run them automatically on every change. The same testing tools used across the JavaScript ecosystem work with Svelte.
Is it hard to find Svelte developers?
The Svelte community is smaller than React's, but the framework is simple and close to standard HTML, CSS and JavaScript, so experienced frontend developers learn it quickly. We keep conventions clear and documented to ease handover.
Where can a SvelteKit application be hosted?
SvelteKit uses adapters to deploy to Node.js servers, serverless and edge platforms or as static files. We deploy into your own cloud account so you keep full control.
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Have a project in mind? Let’s talk.
Tell us what you are building. We reply within one business day with next steps — and we are happy to sign an NDA first.