Windows

1. Download the font package (.zip)
2. Uncompress the package
3. Search for “fonts” in the Start Menu or go to Start → Control Panel → Appearance and Personalization → Fonts
4. Select all fonts and drag them into the Fonts folder

macOS

1. Download the font package (.zip)
2. Double click on the package to uncompress it
3. Open Font Book (Go to Finder → Applications → Font Book)
4. Select all of the font files and drag them to the Font column (i.e., the second column) of Font Book

Linux

• Command-line:

  cd ~/Downloads   # or wherever you downloaded a font pack.
  unzip <font package>.zip
  # for a single user
  mkdir -p ~/.fonts
  cp *otf *otc ~/.fonts
  fc-cache -f -v # optional
  # for all users
  sudo mkdir -p /usr/share/fonts/opentype/noto
  sudo cp *otf *otc /usr/share/fonts/opentype/noto
  sudo fc-cache -f -v # optional

• Gnome desktop for a single user
  1. Download and uncompress a font package
  2. Make .fonts directory in your home directory if it's not present.
  3. Make a folder named "noto" (optional)
  4. Drag and drop fonts to either .fonts or .fonts/noto
• Gnome desktop for all users
  1. Download and uncompress a font package
  2. Press Alt-F2 and type "gksu nautilus /usr/share/fonts"
  3. Make a folder named "opentype" if not present and open it
  4. Make a folder "noto" in "opentype" folder.
  5. Drag and drop fonts obtained in step a to "noto" folder.
• Using fonts
  1. Some programs will recognize newly installed fonts as soon as font-cache is updated. It can take a while to update the fontcache in case of super-otc.
  2. Other programs such as Chrome requires restart.
  3. Chrome on Linux cannot recognize more than 2 weights. See http://crbug.com/368442