Move It is a great Google Chrome Extension I like to use. It lets me know when I’ve been sitting too long and will give me a short movement to do. https://goo.gl/5cUIt5
To get Google Chrome Extensions, open Google Chrome. Click on Apps on the left hand side of the top bar. Click on Web Store. Search for whatever extension you are looking for or explore. Click Add to Chrome and pau.
Another extension I like to use is goo.gl URL shortener. This allows me to get a short url and a QR code for the webpage that I am currently on.