Between my Feedly account, Flipboard, and other websites that I regularly visit, I read a lot online these days. There are short articles and news items that I scan through, and longform articles that I save to my Pocket account to read later. ( Then there is books on Amazon and Google Play).
Read Mode is a good extension to have for all these.
Read Mode puts Google Chrome into read mode for a pleasant reading experience.
Just click on the glasses icon in the address bar, the current page will turn into a nice-to-read black on white page allowing you to read without forcing your eyes. Ads and Flash animations are also removed while on read-mode. Click the icon again and everything will go back to normal.
There are many other popular extensions of course, this is nothing new, but I kind of liked the default presentation of this extension. It actually takes a lot of effort to stay simple!