SvelteKit Named Slots: Advanced Guide 2026

SvelteKit named slots revolutionize component composition in 2026 apps. Building on Svelte 5's slots API, named slots enable flexible, reusable UI patterns without props drilling. Ideal for dashboards, modals, and layouts.

This article explores syntax, fallbacks, context passing, and real-world examples for SvelteKit 2.x developers seeking cleaner code.

Named Slots Syntax Basics

Declare and use effortlessly.
  • <MyComponent let:header>
  • <slot name='header'>Default</slot>
  • Multiple slots per component

Advanced Fallback Content

Graceful degradation.
  • Conditional rendering
  • Children as default
  • Scoped styles

Passing Context to Slots

Reactive data flow.
  • use:context in slots
  • Props from parent
  • Stores integration

SvelteKit Layout Named Slots

App-wide patterns.
  • +layout.svelte slots
  • Navigation overrides
  • Error boundaries

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