SvelteKit

SvelteKit serves every page through one HTML shell, src/app.html. Add the tag there and every route is covered.

Copy your tracking snippet

In OnyxMetric, open your site's Site Settings and copy the tracking script. It looks like this:

<script src="https://app.onyxmetric.com/api/script.js?siteId=YOUR_SITE_ID" async></script>

YOUR_SITE_ID is the numeric ID of your site.

Add the snippet to SvelteKit

Open src/app.html and add the tag inside <head>, near %sveltekit.head%:

src/app.html

<head>
  <meta charset="utf-8" />
  <link rel="icon" href="%sveltekit.assets%/favicon.png" />
  <meta name="viewport" content="width=device-width, initial-scale=1" />
  <script src="https://app.onyxmetric.com/api/script.js?siteId=YOUR_SITE_ID" async></script>
  %sveltekit.head%
</head>

Client-side navigation is recorded automatically, so no router hook is needed.

Check that it works

Load your live site and click through a few pages. Pageviews show up in the OnyxMetric dashboard within seconds.

If nothing arrives:

View the page source and search for script.js?siteId= to confirm the tag is present.
In the browser's Network tab, check that script.js returns 200 and that requests go to /api/track.
Turn off ad blockers, or proxy the script through your own domain.
Read script troubleshooting for other causes.

Track custom events

Svelte components also run on the server in SvelteKit, so check for window.

src/lib/components/ActionButton.svelte

<script>
  function handleAction() {
    if (typeof window !== "undefined") {
      window.onyx?.event("user_action", { component: "ActionButton" });
    }
  }
</script>

<button on:click={handleAction}>Perform action</button>

Troubleshooting

Missing pageviews after navigation: automatic tracking covers SvelteKit's router, so test that first. To force it, call pageview() from afterNavigate in your root layout:

src/routes/+layout.svelte

<script>
  import { afterNavigate } from "$app/navigation";

  afterNavigate(() => {
    if (typeof window !== "undefined") {
      window.onyx?.pageview();
    }
  });
</script>

Next steps

Track custom events such as signups, purchases, and clicks.
Identify users to tie sessions to accounts.
Proxy the script through your own domain to get past ad blockers.
Script attributes let you skip or mask URLs and tag events.