File-based Routing with +page.svelte
Map file paths under src/routes to URL paths automatically.
File-based Routing with +page.svelte is a free Sveltejs Academy lesson on CoddyKit. This is lesson 1 of 4. You can read the complete lesson below for free — then practise it hands-on in the browser with a built-in code editor and a 24/7 AI tutor. It is part of the Sveltejs Academy learning path, and your progress syncs across the web and the CoddyKit app. The Sveltejs Academy course includes 4 lessons in total.
File = Route
SvelteKit maps folders under src/routes to URL paths. A +page.svelte file defines a route.
Root Page
src/routes/+page.svelte renders at /.
About Page
src/routes/about/+page.svelte renders at /about.
Nested Routes
Folders nest. src/routes/blog/posts/+page.svelte renders at /blog/posts.
Page Component
The file is a regular Svelte component. Use any feature you have learned.
<!-- +page.svelte -->
<h1>About Us</h1>
<p>Welcome to our site.</p>Routing Convention
Filenames starting with + have special meaning to SvelteKit. +page, +layout, +server, etc.
No Imports Needed
You do not register routes manually. The file system is the router.
Programmatic Navigation
Use goto from $app/navigation to navigate in code.
import { goto } from "$app/navigation";
goto("/about");Link Component
Use plain <a href> tags; SvelteKit intercepts them for client-side navigation.
Pre-fetching
Use data-sveltekit-preload-data on a link for hover-triggered prefetching.
404 Page
Create src/routes/+error.svelte to customize the not-found page.
Quick Check
Where do you create a /products route?
Recap
The file system defines routes. +page.svelte in any folder under src/routes becomes a route.
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Frequently Asked Questions
Is the “File-based Routing with +page.svelte” lesson free?
Yes — the full text of “File-based Routing with +page.svelte” is free to read here on the web. To practise it interactively (a built-in code editor and a 24/7 AI tutor) and unlock the rest of the Sveltejs Academy course, upgrade to CoddyKit PRO. The Sveltejs Academy course includes 4 lessons in total.
What will I learn in “File-based Routing with +page.svelte”?
Map file paths under src/routes to URL paths automatically. You practise Sveltejs Academy with hands-on code you run directly in the browser, and a 24/7 AI tutor answers your questions as you work through the lesson.
Do I need any experience to start Sveltejs Academy?
No prior experience is required. Sveltejs Academy on CoddyKit is structured for beginners through advanced learners, so you can start here or from the beginning and move at your own pace. This is lesson 1 of 4.
How long does the “File-based Routing with +page.svelte” lesson take?
Most CoddyKit lessons take about 5–10 minutes. Each one is bite-sized and interactive, so you make steady progress and pick up exactly where you left off across the web and the app.
Can I write and run code in this Sveltejs Academy lesson?
Yes. Every Sveltejs Academy lesson includes a built-in code editor, so you write and run real code right in your browser and get instant AI feedback — no local setup required.
All lessons in this course
- File-based Routing with +page.svelte
- Dynamic Route Parameters: [id]
- Optional and Rest Parameters
- Layout Files: +layout.svelte