fontaine VS Docusaurus

An alternative to Capsize for reducing font swap layout shift is Fontaine. It has a Vite plugin, and is able automatically to update font face CSS (like we will do, using Capsize metrics). We do something a little more manual here with Capsize, just to help get a grounding in the issue and solution approach.

Fonts are one of the biggest pain points in the context of performance optimization. I have decided to not use any CDN like Google Fonts but instead, I'm serving them myself. Also, I have used a cool package called Fontaine which reduces CLS by using local font fallbacks with crafted font metrics.

I started using fontaine on my blog. If you haven't tried it out, you can find it here. It helps reduce Cumulative Layout Shift. The flash of unstyled content jank that you can see when you first land on a site, before fonts have loaded. I can't see why that would be an issue. It should improve my blogs Core Web Vitals and help stuff rank better, not worse. I think this is a red herring.

Custom font usage can introduce cumulative layout shift (or "jank") to your website. This post shows how to use fontaine to reduce this with Docusaurus sites.

Docusaurus is a Facebook project designed for building, deploying, and maintaining open source project websites. With a strong focus on ease of use and extensive documentation, it helps developers create and manage project documentation efficiently. Its significant following on GitHub underscores its value in the open source community. Explore more about Docusaurus on their website.

Learn more about Docusaurus in its official documentaton

Docusaurus is a popular open-source documentation tool primarily designed for product documentation and other technical documentation needs. It was first released in 2017 by Facebook Open Source (now Meta Open Source). Just recently, Docsaurus version 3.0 was released.

// @ts-check // `@type` JSDoc annotations allow editor autocompletion and type checking // (when paired with `@ts-check`). // There are various equivalent ways to declare your Docusaurus config. // See: https://docusaurus.io/docs/api/docusaurus-config import { themes as prismThemes } from "prism-react-renderer"; /** @type {import('@docusaurus/types').Config} */ const config = { title: "My Site", tagline: "Dinosaurs are cool", url: "https://your-docusaurus-test-site.com", baseUrl: "/", onBrokenLinks: "throw", onBrokenMarkdownLinks: "warn", favicon: "img/favicon.ico", organizationName: "facebook", // Usually your GitHub org/user name. projectName: "docusaurus", // Usually your repo name. presets: [ [ "docusaurus-preset-openapi", /** @type {import('docusaurus-preset-openapi').Options} */ ({ docs: { sidebarPath: require.resolve("./sidebars.js"), // Please change this to your repo. editUrl: "https://github.com/facebook/docusaurus/tree/main/packages/create-docusaurus/templates/shared/", }, blog: { showReadingTime: true, // Please change this to your repo. editUrl: "https://github.com/facebook/docusaurus/tree/main/packages/create-docusaurus/templates/shared/", }, theme: { customCss: require.resolve("./src/css/custom.css"), }, }), ], ], themeConfig: /** @type {import('docusaurus-preset-openapi').ThemeConfig} */ ({ navbar: { title: "My Site", logo: { alt: "My Site Logo", src: "img/logo.svg", }, items: [ { type: "doc", docId: "intro", position: "left", label: "Tutorial", }, { to: "/api", label: "API", position: "left" }, { to: "/blog", label: "Blog", position: "left" }, { href: "https://github.com/facebook/docusaurus", label: "GitHub", position: "right", }, ], }, footer: { style: "dark", links: [ { title: "Docs", items: [ { label: "Tutorial", to: "/docs/intro", }, ], }, { title: "Community", items: [ { label: "Stack Overflow", href: "https://stackoverflow.com/questions/tagged/docusaurus", }, { label: "Discord", href: "https://discordapp.com/invite/docusaurus", }, { label: "Twitter", href: "https://twitter.com/docusaurus", }, ], }, { title: "More", items: [ { label: "Blog", to: "/blog", }, { label: "GitHub", href: "https://github.com/facebook/docusaurus", }, ], }, ], copyright: `Copyright © ${new Date().getFullYear()} My Project, Inc. Built with Docusaurus.`, }, prism: { theme: prismThemes.github, darkTheme: prismThemes.dracula, }, }), }; export default config;

Facebook's React/Markdown SSG docusaurus does those things: https://docusaurus.io/

Though you may have to use a plugin for responsive images: https://docusaurus.io/docs/api/plugins/@docusaurus/plugin-id...

Docusaurus is an open-source static site generator built on React and has emerged as a popular tool for developing and maintaining product documentation. Its ease of use, extensive features, and robust community support make it a compelling choice for many organizations.

Wondering why Docusaurus (https://docusaurus.io) did not match their needs. Works perfectly fine as a blogging engine for our tech blog.

This is developed by Meta. You can create really nice-looking documentation websites super fast.