I'd only add the Safari Pinned Tabs `meta` tag (https://developer.apple.com/library/archive/documentation/Ap...), which had you define a simple black and white SVG. This image would get used when a user pinned your tab in Safari, in color when active and black when inactive.

GeoURLs seem like they would still be useful today.

Ohh, conditional comments. We had so many IE holdouts on our site, I think only around 2021 I removed the last IE specific fallbacks, and I think some conditional comments were a thing until 2020.

I’m not sure when I removed a bunch of `msapplication-` fields, but probably after 2021 ;)

I guess I can remove `apple-touch-` and `application-name` stuff next…

Love the ruby tags on Chinese text!!