Setting the emoji font Topic is solved

[Mæstro]

My browser is working properly; this is a request to improve, not to mend. On this picture, the Japanese title for the picture includes an emoji that uses only black lines, not full colour as most emoji fonts use. (I have attached a sample.) I have found that I can also get these line art emoji if I paste Japanese text containing emoji into DeepL for translation. However, the emoji will appear with full colour in its tab and the history sidebar. How can I identify this monochrome emoji font and use it by default throughout Pale Moon? (I would really like to use this throughout my OS, but I can confine my scope to the browser for asking here.)

[Moonchild]

For consistency's sake we always try to use the embedded emoji font first, otherwise you'd get a wild and inconsistent mix of B&W and colour emoji inside the browser. This is the case where a system font would have emoji support. System fonts are unlikely to be updated regularly to include later unicode emojis so we prioritize using the twemojimozilla font we embed.
You can try to tweak this with the font.name-list.emoji preference by prefixing the Twemoji Mozilla font name with the system font name that supports emoji in B&W (I do not know which font that would be for your system but I'm sure you can figure that out ) in a comma-separated list (see other font entry prefs)

[Mæstro]

It turns out that the emoticons, at least, are embedded in TakaoGothic, the font which my system uses by default to render Japanese. I have this and a few other fonts with monochrome emoji for fuller support listed now. Thank you!