After two years of development, SvelteKit 1.0 has been officially released and is now available for production use.

SvelteKit is a framework for building web applications with Svelte, which meets application development of different scales and provides a very flexible and good experience file system-based routing architecture. Svelte is a UI component framework loved by developers for its excellent performance and ease of use.

SvelteKit includes features such as server-side rendering (SSR), routing, code splitting for JS and CSS, and adapters that generate different code for different Serverless platforms.

Different from some of the current mainstream web frameworks, SvelteKit has the following characteristics:

• Unlike traditional “multi-page application” or MPA frameworks, which defaults to client-side navigation after the initial server-rendered page load. This allows for faster page transitions, state that persists between pages (such as the scroll position of a sidebar), and less data usage. It also avoids re-running third-party scripts, such as analytics scripts, on every page load.
• Unlike traditional server frameworks, which allows developers to use one language instead of having two tightly coupled applications (one for generating HTML and one for handling client interaction). Since SvelteKit runs anywhere JavaScript runs, developers can deploy the corresponding application as a traditional node server, or use serverless features — including the edge.
• Unlike static site generatorsdevelopers can build applications with personalized or dynamic data without fetching data from the browser after the page loads, slowing down performance, changing the layout.

See the release announcement and migration guide for details.

According to the team, SvelteKit 1.0 is a start. While it’s production ready, it’s just the beginning for them. The currently planned roadmap includes built-in i18n support, incremental static rebuilds, fine-grained control over deployment regions and runtimes, image optimization, and many other improvements.