Part of the problem – as AdGuard concedes in the post – is that Easy List (which AdGuard and many other ad blockers use) is a woefully inefficient rule list wit

Part of the problem – as AdGuard concedes in the post – is that Easy List (which AdGuard and many other ad blockers use) is a woefully inefficient rule list with over 50,000 entries. Many of which are out of date, redundant and not optimised for performance. This leads to excessive memory use and performance slowdowns and is one of the reasons why there is a 50,000 rule limit in the Safari Content Blocking API. As a developer of an alternate ad blocker[1] for the iPhone, iPad and Mac you can deliver a full featured, quality ad blocker with less than 5,000 core rules. This provides a faster and more efficient ad blocking experience. As they note however, YouTube ad blocking is a more difficult problem to solve, but can be done cleanly on macOS. At least at the moment it can't be done 100% on iOS without Apple rolling out some additional features to Safari on that platform. [1] https://www.magiclasso.co/ https://www.magiclasso.co/