How do I configure the default emoji font to be used in OS/Browser? (it's currently Symbola but I want Noto) [closed]

One way to set Noto Emoji as the default emoji font in Ubuntu is to setup some local font config files.

Create the directory and the file itself with:

• mkdir -p ~/.config/fontconfig/
• touch ~/.config/fontconfig/fonts.conf

And then populate the created file with the following text:

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE fontconfig SYSTEM "fonts.dtd">

<fontconfig>
  <match>
    <test name="family"><string>sans-serif</string></test>
    <edit name="family" mode="prepend" binding="strong">
      <string>Noto Emoji</string>
    </edit>
  </match>
  <match>
    <test name="family"><string>serif</string></test>
    <edit name="family" mode="prepend" binding="strong">
      <string>Noto Emoji</string>
    </edit>
  </match>
  <match>
    <test name="family"><string>monospace</string></test>
    <edit name="family" mode="prepend" binding="strong">
      <string>Noto Emoji</string>
    </edit>
  </match>
  <match>
    <test name="family"><string>Apple Color Emoji</string></test>
    <edit name="family" mode="prepend" binding="strong">
      <string>Noto Emoji</string>
    </edit>
  </match>
</fontconfig>

And finally flush the font cache: fc-cache -f -v.

If Noto is installed you should now see Noto for emoji unicode blocks in the browser for example, and Symbola filling in where Noto is lacking.