We are pleased to announce that Blockthrough has acquired PageFair. Together, the combined company is the clear leader in adblock mitigation solutions, and will offer the industry’s […]Read more
PageFair is pleased to release our 2017 adblock report. The state of the blocked web presents a combined picture of desktop and mobile adblock usage for the […]Read more
This note is a layman’s guide to how the “block lists” that power adblocking work.
A block list contains tens of thousands of rules that govern how a website should be displayed. There are two types of rules. “Filter” rules define what should be blocked. “Exception” rules define what content should be displayed. The most popular block list, “EasyList”, contains tens of thousands of these filters and exceptions.