Firefox' "Reader View" is amazing, especially when paired with this addon that lets you activate it pretty much everywhere

https://addons.mozilla.org/en-US/firefox/addon/activate-reader-view/

A little button in the address bar re-styles the page for great readability, with some options to customise for your needs

Activate Reader View – Get this Extension for 🦊 Firefox (en-US)

Download Activate Reader View for Firefox. This add-on adds a button to the toolbar. Clicking on it activates the Reader View even if the icon in the address bar is not present.

@gaeel hell yea. I've just spent a bunch of time reading RFCs and reader view was a god send for my eyes