Name:uMatrix (Free)
URL:https://chrome.google.com/webstore/detail/umatrix/ogfcmafjalglgifnmanfmnieipoejdcf/
Utility:This free tool can – 

• Point and click to forbid/allow any class of requests made by browser 
• Block scripts, iframes, ads, Facebook etc
• Efficient blacklisting 
• Ease of use and much more

Link for the same extension for Mozilla Firefox is -https://addons.mozilla.org/en-US/firefox/addon/umatrix/