If you want to be sure you’re prioritising your content first and foremost, try disabling all CSS , JavaScript, and external resources (or just access your site in a browser that ignores those things, like Lynx), and check that it’s still usable. font-display: optional is an excellent choice for body text: if the browser thinks it’s worthwhile to download the font (it might choose not to if the operating system indicates that it’s using a metered or low-bandwidth connection, for example), it’ll try to download it, but it won’t let doing so slow things down too much and it’ll fall-back to whatever backup (system) font you specify. Precaching assets that you anticipate they’re likely to need (e.g.