# Enable analytics
Adds a web analytics component (Plausible, Google Analytics or PostHog) mounted in the root layout and configured from .env.
Tags: sveltekit, analytics, plausible, google-analytics, posthog, velastack

$ vela enable analytics

## src/lib/components/analytics/analytics.svelte

```svelte
<script lang="ts">
  import { env } from "$env/dynamic/public";

  // PUBLIC_PLAUSIBLE_DOMAIN is the site as registered in Plausible, e.g.
  // `example.com`. Nothing loads until it is set. The script tracks
  // client-side navigations itself, so no SvelteKit wiring is needed.
  // Self-hosting? Point `src` at your instance instead of plausible.io.
  const domain = env.PUBLIC_PLAUSIBLE_DOMAIN ?? "";
</script>

<svelte:head>
  {#if domain}
    <script
      defer
      data-domain={domain}
      src="https://plausible.io/js/script.js"
    ></script>
  {/if}
</svelte:head>
```