This extension needs to be executed along with an API that is responsible for formatting the text and creating the file in the Obsidian vault.
Don't worry it's as easy as run:

docker run -d -v /home/USER/Documents/Obsidian/Highlights/:/code/obsi -p 8888:8888 rooyca/markob

Go to my Github to read the complete installation guide.

Install

• License: MIT License
• Weekly downloads: 2
• Average daily users: 4
• Rating: 0/5 of 0 ratings
• Created: 2023-04-02 21:35:44
• Last updated: 2023-04-03 14:00:28
• Homepage: https://github.com/Rooyca/ExHigh-Firefox-Extension
• Support site and email
• Donate
• Orig: https://addons.mozilla.org/en-US/firefox/addon/markob/
• API: rooyca@r00yca