If you are like me you are probably serving your fonts from Google Fonts.
Why? Because it is one less thing to worry about when making websites (font rendering, font subsets, unicode range, font variants, font display, font discovery…).
In addition to those nifty features and sensible defaults, it was common knowledge that using Google fonts would leverage the speed and cache of their CDN. Sadly the caching argument is not true anymore.
Since Chrome v86, released October 2020, cross-site resources like fonts can’t be shared on the same CDN anymore. This is due to the partitioned browser cache (Safari has had this for years already).
This feature was added to prevent some cross-site tracking mechanism like:
Now is the time to say goodbye to Google Fonts 👋