Description from extension meta
Highlights/lowlights all 'native' embedded ads in a web page
Image from store
Description from store
This extension detects inline or "native" content posts in popular social media streams and search engines, and highlights them to make their promotional status more obvious.
This extension does not "block" ads, it highlights them. Overlaid across the advertising posts, you'll see a red border, along with the Ad-Reveal icon letting you know the post has been detected as an advert.
Currently works with Facebook, Twitter, Reddit, Pinterest, and Ebay among others. Many more coming.