You can use the following code sample to explore using parameters and
different content types with
next/og.
To learn more about OG Image Generation, see Open Graph Image
Generation.
- Place your custom font
typewr__.ttf(available from 1001freefonts.com) under the/assetsfolder from the project root. - Make sure that the letter case of the file matches the code (e.g. file name and code should be both lowercase or uppercase).
Create an api route with route.tsx in /app/api/og/ and paste the following code:
app/api/og/route.tsx
import { ImageResponse } from 'next/og';
// App router includes @vercel/og.
// No need to install it.
export async function GET() {
// Make sure the font exists in the specified path:
const fontData = await fetch(
new URL('../../../../assets/typewr__.ttf', import.meta.url),
).then((res) => res.arrayBuffer());
return new ImageResponse(
(
<div
style={{
backgroundColor: 'white',
height: '100%',
width: '100%',
fontSize: 100,
fontFamily: '"Typewriter"',
paddingTop: '100px',
paddingLeft: '50px',
}}
>
Hello world!
</div>
),
{
width: 1200,
height: 630,
fonts: [
{
name: 'Typewriter',
data: fontData,
style: 'normal',
},
],
},
);
}If you're not using a framework, you must either add
"type": "module" to your
package.json or change your JavaScript Functions'
file extensions from .js to
.mjs
Preview the OG route locally by running the following command:
pnpm devThen, browse to http://localhost:3000/api/og. You will see the following image:
Image generated using the custom font typewriter