og/lib/render.js

import html2png, { renderHtml as htmlParser } from '@besties/html2png'
import fs from 'node:fs'

const figtreeRegular = fs.readFileSync('./assets/Figtree-Regular.woff')
const figtreeMedium = fs.readFileSync('./assets/Figtree-Medium.woff')
const figtreeExtraBold = fs.readFileSync('./assets/Figtree-ExtraBold.woff')

const css = fs.readFileSync('./assets/style.css', 'utf8')

const renderOptions = {
	fonts: [
		{
			name: 'Figtree',
			data: figtreeRegular,
			weight: 400,
			style: 'normal'
		},
		{
			name: 'Figtree',
			data: figtreeMedium,
			weight: 500,
			style: 'normal'
		},
		{
			name: 'Figtree',
			data: figtreeExtraBold,
			weight: 800,
			style: 'normal'
		}
	]
}

export default async function (html) {
	return html2png(html, css, renderOptions)
}

export async function renderHtml(html) {
	return htmlParser(
		html,
		await fs.promises.readFile('./assets/style.css', 'utf8')
	).outerHTML
}