---
title: performance/preconnect ยท Preconnect third-party origin
description: Preconnect to third-party origins used by the page.
---
**Severity:** info
## What it checks
Flags a resource from a well-known third-party origin (currently Google Fonts: `fonts.googleapis.com`, `fonts.gstatic.com`) referenced without a `` (or `dns-prefetch`) for that origin. Routes that reference no such origin are not checked.
## Why it matters
Connecting to a third-party origin (DNS + TCP + TLS) is costly; a `preconnect`/`dns-prefetch` hint starts it early so the resource arrives sooner.
## How to fix
Add a preconnect hint for the third-party origin:
```html
```
## Configuration
| Option | Type | Default |
| --------- | ----------------- | ------------------------------------------- |
| `origins` | list of hostnames | `fonts.googleapis.com`, `fonts.gstatic.com` |
Configured origins are **added to** the built-in list, rather than replacing it, so a project keeps
checking the Google Fonts origins even after adding its own, and picks up any origin the built-in
list grows to cover in a later svelte-vitals release.
```js svelte-vitals.config.js
export default {
rules: {
'performance/preconnect': { options: { origins: ['cdn.example.com'] } }
}
};
```
## Mode differences
**Source analysis** (the CLI, the dashboard's static baseline) composes each route's `` from `` in the page and its layout chain, followed into repo-local components, plus the known meta components (`svelte-meta-tags`, `svelte-seo`) and any you declare in `metaComponents`. It judges only a **literal** value; it never examines a dynamic one. **Rendered analysis** (the Vite plugin's build pass, a route you visit in the dashboard) reads the shipped ``, where every value is literal; the build pass covers prerendered routes only. When the two disagree, trust the rendered result.
## Disabling
Record existing findings in the suppressions file (`npx svelte-vitals --update-suppressions`), scope the rule per route or path with `overrides`, or turn it off:
```js svelte-vitals.config.js
export default {
rules: {
'performance/preconnect': 'off'
}
};
```