These days Linux distributions comes with different desktop flavors,and those different desktop environments contain different applications for this.
To install a font, first download it in
- TrueType (.ttf),
- PostScript Type 1 (.pfb + .pfm), or
- OpenType (.otf) format.
- You can then double-click the font to preview it.
- On Ubuntu or other GNOME-based Linux distribution, GNOME Font Viewer will appear.
- Click the Install button to install the font.
You can install fonts manually and even install multiple fonts at onceby placing them in your user account’s .fonts directory.
- Open your Home directory in a file manager.
- In Nautilus, click View > Show Hidden Files to view hidden folders.
- Locate the .fonts folder and double-click it.
- If it doesn’t exist, right-click in your home directory
- Create a new folder and name it .fonts.
- Place font in this directory to install for your user account.
- open the .fonts folder in your home directory
- Delete the font files from there.
- If you added the font with GNOME Font Viewer browse to the .local/share/fonts directory in your home
- Run the fc-cache command later to unregister the fonts from the system.