URL: /rules/perf/font-delivery
---
title: "Font Delivery"
description: "Flags render-blocking third-party font stylesheets in the critical request chain"
---
Flags render-blocking third-party font stylesheets that sit in the critical request chain.
| | |
|---|---|
| **Rule ID** | `perf/font-delivery` |
| **Category** | [Performance](/rules/perf) |
| **Scope** | Per-page |
| **Severity** | warning |
| **Weight** | 5/10 |
## What it detects
- **Render-blocking font CSS**: a `` in `` pointing at a hosted font service (Google Fonts, Adobe Typekit, Monotype fast.fonts, Typography.com, Bunny Fonts, Font Awesome) that is not deferred. A stylesheet loaded with `media="print"` (the async-load trick) is treated as non-blocking and is not flagged.
- **`@import` of a font provider** inside an inline `