How the next/font system helps with font optimization in Next.js.Understanding the font rendering process.This article covers how to use this font system to add custom fonts and Google Fonts in a Next.js project as well as to optimize the font loading experience. Next.js v13 introduced a font system called next/font to help abstract the complexity of optimizing fonts. While we can greatly reduce this incurred cost by self-hosting the fonts, we also have the issue of layout shift to deal with. One issue associated with web fonts that are hosted with font delivery services like Google Fonts is the cost of external network requests. However, it can also become tedious if we care about performance optimization. Web fonts, on the other hand, allow us to maintain a consistent look. But we may not desire these font types, and more importantly, they are not consistent between operating systems. With system fonts, we are guaranteed that text will render at the earliest possible time. How we load fonts in our web project can make or break the user’s experience. Editor’s note: This article was updated on 30 March 2023 to include information on FOIT (flash of invisible text), reusing fonts, and relevant details (pertaining to Google Fonts) on improving privacy for sites subject to GDPR.
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