The "sitelen pona in Google Docs" extension allows users to write in sitelen pona within Google Docs and Sheets. It also offers support for Google Slides in the near future. By utilizing the UCSUR standard for sitelen pona, text will automatically appear in the desired font if the user has the nasin-nanpa font installed on their system. Users can also configure different fonts by adding specific instructions to the file's title.

This extension provides flexibility in font usage, enabling users to easily switch between fonts and have their text rendered in sitelen pona. Default settings include using nasin-nanpa and replacing Arial Narrow text with sitelen pona. Customization options allow users to tailor the font settings based on their preferences, ensuring a seamless writing experience.