SvelteKit is the official full-stack framework for Svelte, providing file-based routing, server-side rendering, static site generation, and API routes in a single cohesive framework. Unlike React or Vue, Svelte compiles components to vanilla JavaScript at build time — there's no virtual DOM or runtime framework to ship to the browser, which makes Svelte bundles significantly smaller. It's favored by performance-conscious teams building dashboards, SaaS products, and marketing sites who want minimal JavaScript overhead. SvelteKit sites are identifiable through the _app/immutable/ path for compiled JavaScript chunks, data-sveltekit-prefetch attributes on links for preloading, and the __sveltekit global object exposed in the browser. The framework's distinctive code-splitting produces multiple small .js files in the _app/immutable/chunks/ directory rather than a single large bundle.
Paste any URL to instantly detect whether it was built with SvelteKit. Our engine checks 5 technical signals.
SvelteKit is used across many industries. These are the most common website types built on this platform:
Businesses of all sizes
Fast, reliable site building with professional results
Designers and developers
Powerful tools with minimal setup
Startups
Quick launch with scalable infrastructure
Content creators
Beautiful presentation for your work
Every SvelteKit website leaves distinctive technical fingerprints. Here's what to look for:
JavaScript Patterns
2 script patterns linked to SvelteKit
HTML Attributes
3 HTML patterns in the page source
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