As well as readability (mentioned above), I find Evernote's Clearly to be a great extension for reading anything on the web (medium.com tends to be notorious to read)...

https://evernote.com/clearly/

Note that you don't need a evernote account to use this (I don't, and it just works).

Readability[1] helps a lot in these cases.

[1] https://readability.com/