Impact Score: 5/10
Astro [email protected] — Release Notes & Engineering Impact
Source available — automated, not human-reviewed
Component: astro · Channel: stable. Automated analysis, not a compatibility certification. How this works.
Analysis updated: 2026-11-01.
⚡ Executive Summary (TL;DR)
Astro [email protected]. Source highlight: Adds a new `getFontBuffer()` method to retrieve font file buffers when using the experimental Fonts API
Who Does This Impact? (Role-Based Analysis)
💻 Software Engineers & Devs
Check the source notes against the package and APIs you use before upgrading.
📊 Product & Engineering Leads
Use the documented changes to assess relevance to your product; release frequency alone is not a quality measure.
⚙️ DevOps & Security
Verify the target version, runtime requirements and rollback procedure in the official documentation.
🔧 Bug Fixes & Patches (2)
- Adds a new `getFontBuffer()` method to retrieve font file buffers when using the experimental Fonts API
- data: await fetch(new URL(data[0].src[0].url, context.url.origin)).then(res => res.arrayBuffer()),
📄 View Raw Release Notes (Original Developer Log)
### Patch Changes
- [#15182](https://github.com/withastro/astro/pull/15182) [`cb60ee1`](https://github.com/withastro/astro/commit/cb60ee16051da258ab140f3bb64ff3fd8e4c9e17) Thanks [@florian-lefebvre](https://github.com/florian-lefebvre)! - Adds a new `getFontBuffer()` method to retrieve font file buffers when using the experimental Fonts API
The `getFontData()` helper function from `astro:assets` was introduced in 5.14.0 to provide access to font family data for use outside of Astro. One of the goals of this API was to be able to retrieve buffers using URLs.
However, it turned out to be impactical and even impossible during prerendering.
Astro now exports a new `getFontBuffer()` helper function from `astro:assets` to retrieve font file buffers from URL returned by `getFontData()`. For example, when using [satori](https://github.com/vercel/satori) to generate OpenGraph images:
```diff
// src/pages/og.png.ts
import type{ APIRoute } from "astro"
-import { getFontData } from "astro:assets"
+import { getFontData, getFontBuffer } from "astro:assets"
import satori from "satori"
export const GET: APIRoute = (context) => {
const data = getFontData("--font-roboto")
const svg = await satori(
<div style={{ color: "black" }}>hello, world</div>,
{
width: 600,
height: 400,
fonts: [
{
name: "Roboto",
- data: await fetch(new URL(data[0].src[0].url, context.url.origin)).then(res => res.arrayBuffer()),
+ data: await getFontBuffer(data[0].src[0].url),
weight: 400,
style: "normal",
},
],
},
)
// ...
}
```
See the [experimental Fonts API documentation](https://docs.astro.build/en/reference/experimental-flags/fonts/#accessing-font-data-programmatically) for more information.