While Farside does not have its own official browser extension, the functionality integrates well with Redirector, which is available for Firefox, Chrome, Edge, and Opera. Setup

For ease of use,

Install the Redirector extension
Add a new entry:

Description: Farside
Example URL: https://www.youtube.com/watch?v=N5dauIYZTs4
Include pattern: ^(?:https?://)(?:www.|)((?:imdb|imgur|instagram|medium|odysee|quora|reddit|tiktok|translate|twitter|wikipedia|youtube).(?:com|org|google.(?:com|au|de|co)).*)
Redirect to: https://farside.link/$1
Pattern type: Regular Expression

(extension setup provided by @LangLangBart in https://github.com/benbusby/farside/issues/64)