If you know things about Google web fonts and emoji and have nothing better to do… recently the Noto Emoji font has stopped working for me on https://ooh.directory, with Safari and Firefox either not rendering particular emoji, or not using the font for some. Works fine in Chrome!

I explain it in more detail here https://stackoverflow.com/questions/77422583/googles-noto-emoji-font-not-being-used-for-some-emoji-in-some-browsers with a test page of all emoji at https://archive.gyford.com/temp/emoji.html

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It looks like Firefox not rendering some Noto Emoji font characters is a bug https://github.com/googlefonts/noto-emoji/issues/391

Still not sure why Safari is having problems with the font but I appear to have solved it by generating my own, much smaller, subset of the font and using that instead. It works.

I wrote up how I did that https://www.gyford.com/phil/writing/2023/11/06/subset-emoji-font-python/

Firefox Mac: some icons in Black and white Noto Emoji appear in colour · Issue #391 · googlefonts/noto-emoji

Many icons in Noto Emoji black-and-white appear in colour when it is used as a webfont in Firefox. Safari and Chrome show b/w glyphs only, as expected. The colour glyphs are from the system Apple C...

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