Fonts impact energy efficiency, system fonts reduce data consumption and improve performance, while limiting web font variations minimizes unnecessary downloads.

Fonts play a role in energy efficiency. Web fonts must often be downloaded from external servers, increasing data consumption and potentially slowing load times. System fonts, already installed on users’ devices, can reduce resource use and improve the user experience. 

Recommendations:

• Prioritize system fonts:  If possible, use system fonts (e.g., Arial, Times New Roman) for faster loading and lower data consumption.
• Use only necessary variations:
  When using web fonts, limit the number of weight and style variations (e.g., bold, italic) to minimize unnecessary downloads.