Reader View for Chrome, Firefox, Edge, and Opera is a useful extension/add-on that permits you to open any page in reader view mode and more.
Once you have opened a page in reader view mode, you can enjoy a clutter-free experience. Additionally, you can change the page's color to one of the eight included tones and adjust the page layout to be optimal for you. You are also provided with the ability to email the page content, save in HTML format, auto-read the page with many different voices/languages and options, toggle images, among a few others.
Reader View is a nicely done extension/add-on with just enough extras to please most users wanting a clutter-free viewing experience.