I thought this was both fun and surprising, not least because I really like the result!
Avería […] is a Unicode typeface superfamily created from the average of all fonts on the computer of the creator, Dan Sayers. […] based on the average of all 725 fonts […]
If you have one of the other font filetypes of it, I know there are a handful of online converters, I did so for JetBrainsMono normal, which I had in a TrueType filetype, and converted to Woff2
Speaking of, I’ve found that embedding fonts requires two tiddlers, the font itself (I’ve named mine $:/fonts/JetBrainsMono/Regular.woff2), and a stylesheet ($:/fonts/JetBrainsMono/style.css)
The font will need a content type of font/woff2 if you are using woff2, the stylesheet should be tagged $:/tags/Stylesheet, and have the following text (some changes depending on what you wish to call your font.)
once you have your font and stylesheet, you just type into one or multiple of the $:/ControlPanel Theme Tweaks Settings fields “Font family, Code font family, and or Editor font family” to use it. (I find that trying to set the Editor font family doesn’t seem to always work, may be font dependent…)