To use a specific font on your website, you need to include font files. If you’re using a Mac or Windows computer, you may be familiar with this process from installing so-called TTF files. There’s a similar method on the web. To let the browser know which font to display, you need to include a font file in the website’s configuration. But for the web, it’s not a TrueType Font (TTF)—it’s a different format: the so-called Web Open Font Fformat, or woff2 for short.
In the past, it used to be quite tricky to get a browser to load and display a custom font outside of the system fonts. These days, nearly all browsers are able to render these fonts correctly.
You can check here to see which browsers support woff2 and which do not: https://caniuse.com/woff2